Franklin, Sussex County, New Jersey, USA (original) (raw)

Description: The Mn-dominant humite was originally labeled "leucophoenicite" (see Palace 1935) but it was later found that several of the “leucophoenicite” specimens contained alleghanyite or sonolite. Leucophoenicite and sonolite have been identified as inclusions in alleghanyite . Alleghanyite occurs both in the primary ore and in secondary vein assemblages in Franklin. The best preserved assemblage was described by Palace (1928) and reported by Dunn (1995): “veins up to 3 cm thick, associated with calcite, franklinite and sussexite.The bulk of this material is alleghanyite: it consists of massive alleghanyite which forms euhedral crystals on exposed surfaces. Leucophoenicite is also present, both as epitaxial overgrowths on the underlying alleghanyite, and as apparently randomly oriented euhedra, perhaps of a subsequent growth period.” Alleghanyite also occurs at Franklin as dull pink masses associated with franklinite, willemite and zincite ore, and as glassy pink crystals associated with leucophoenicite in veinlets. According to Dunn (1995) most of the preserved pink-colored material from Franklin is leucophoenicite.

ⓘ Almandine ?

Formula: Fe2+3Al2(SiO4)3

ⓘ 'Amphibole Supergroup'

Formula: A B2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2

Localities:

Franklin Mine, Franklin, Sussex County, New Jersey, USA
Buckwheat dump mineral collecting site, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Balls Hill Iron Mines, Franklin, Sussex County, New Jersey, USA
Buckwheat pit, Franklin Mine, Franklin, Sussex County, New Jersey, USA

ⓘ 'Amphibole Supergroup var. Byssolite'

Formula: AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2

References:

Peters, Thomas A., Koestler, Robert, Peters, Joseph J., Grube, Christian H. (1983) Minerals of the Buckwheat Dolomite, Franklin, New Jersey, in May - June 1983. The Mineralogical Record, 14 (3) 183-194

ⓘ 'Amphibole Supergroup var. Uralite'

Formula: AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2

ⓘ Analcime

Formula: Na(AlSi2O6) · H2O

Localities:

Buckwheat pit, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Franklin, Sussex County, New Jersey, USA
Buckwheat dump mineral collecting site, Franklin Mine, Franklin, Sussex County, New Jersey, USA

ⓘ Anatase

Formula: TiO2

Localities:

Buckwheat pit, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Buckwheat dump mineral collecting site, Franklin Mine, Franklin, Sussex County, New Jersey, USA

Description: Occurs in cavities in the Buckwheat Dolomite.

ⓘ Andradite

Formula: Ca3Fe3+2(SiO4)3

Localities: Reported from at least 12 localities in this region.

Colour: Dark brown, light brown, golden yellow

Fluorescence: None.

Description: A common skarn mineral in coarse-textured areas of the orebody.

ⓘ Andradite var. Melanite

Formula: Ca3(Fe3+,Ti)2(SiO4)3

ⓘ Andradite var. Polyadelphite (FRL)

Formula: (Ca,Mn)3Fe3+2(SiO4)3

Type Locality:

ⓘ Anglesite

Formula: PbSO4

ⓘ Anhydrite

Formula: CaSO4

ⓘ Annabergite

Formula: Ni3(AsO4)2 · 8H2O

Description: Occurs as green coatings on primary nickel species in the unique nickel-cobalt-arsenic assemblage.

ⓘ Anorthite

Formula: Ca(Al2Si2O8)

ⓘ Antigorite

Formula: Mg3(Si2O5)(OH)4

Localities:

Franklin, Sussex County, New Jersey, USA
Mill site dump, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Franklin Mine, Franklin, Sussex County, New Jersey, USA

Description: X-ray verified in Franklin Marble by Tony Nickisher. Not observed by Dunn (1995).

ⓘ Antigorite var. Vorhauserite

Formula: (Mg,Mn)3(Si2O5)(OH)4

ⓘ Antlerite

Formula: Cu3(SO4)(OH)4

Description: Occurs on a single specimen associated mixed with gypsum and brochantite on rhodonite and andradite (Franklin Mineral Museum specimen).

ⓘ 'Apatite'

Formula: Ca5(PO4)3(Cl/F/OH)

ⓘ Aragonite

Formula: CaCO3

Localities:

Franklin Quarry, Franklin Marble, Franklin, Sussex County, New Jersey, USA
Buckwheat pit, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Franklin Mine, Franklin, Sussex County, New Jersey, USA
Mill site dump, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Trotter Mine, Franklin Mine, Franklin, Sussex County, New Jersey, USA

ⓘ Arakiite

Formula: (Zn,Mn2+)(Mn2+,Mg)12(Fe3+,Al)2(As5+O4)2(As3+O3)(OH)23

ⓘ Arsenopyrite

Formula: FeAsS

Localities: Reported from at least 8 localities in this region.

ⓘ Atacamite

Formula: Cu2(OH)3Cl

ⓘ Augite

Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6

Localities: Reported from at least 8 localities in this region.

ⓘ Aurichalcite

Formula: (Zn,Cu)5(CO3)2(OH)6

ⓘ Axinite-(Fe)

Formula: Ca2Fe2+Al2BSi4O15OH

Description: Occurs in conjunction with a magnetite orebody hosted in Cork Hill gneiss at its contact with Precambrian Franklin marble. Palache (1935) describes this mineral as part of a mineral assemblage that almost certainly indicates its occurrence in a secondary vein. This supposition is further supported by the occurrence of axinite-Fe or axinite-Mn in veins, accompanied by similar associated minerals, at 7 other localities along the northwest margin of the Reading Prong highlands.

ⓘ Axinite-(Mn) (TL)

Formula: Ca2Mn2+Al2BSi4O15(OH)

Localities:

Franklin Mine, Franklin, Sussex County, New Jersey, USA
Trotter Mine, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Parker shaft, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Mill site dump, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Buckwheat dump mineral collecting site, Franklin Mine, Franklin, Sussex County, New Jersey, USA

ⓘ Azurite

Formula: Cu3(CO3)2(OH)2

Localities:

Franklin Quarry, Franklin Marble, Franklin, Sussex County, New Jersey, USA
Franklin Mine, Franklin, Sussex County, New Jersey, USA
Mill site dump, Franklin Mine, Franklin, Sussex County, New Jersey, USA

✪ Bannisterite (TL)

Formula: (Ca,K,Na)(Mn2+,Fe2+)10(Si,Al)16O38(OH)8 · nH2O

Type Locality:

Habit: Large platy masses

Colour: Brown

ⓘ Barylite

Formula: Be2Ba(Si2O7)

ⓘ Barysilite

Formula: Pb8Mn2+[Si2O7]3

ⓘ Baryte

Formula: BaSO4

Localities:

Taylor Mine, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Trotter Mine, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Franklin Mine, Franklin, Sussex County, New Jersey, USA
Mill site dump, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Buckwheat dump mineral collecting site, Franklin Mine, Franklin, Sussex County, New Jersey, USA

Description: Occurs in ore in the Franklin orebody.

ⓘ 'Baumite'

ⓘ Bementite (TL)

Formula: Mn7Si6O15(OH)8

Localities:

Trotter Mine, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Mill site dump, Franklin Mine, Franklin, Sussex County, New Jersey, USA

Description: Occurs in ore within the Franklin orebody.

ⓘ 'Biotite'

Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2

Localities:

Wildcat Branch feldspar deposit, Franklin Borough, Franklin, Sussex County, New Jersey, USA
Double Rock pegmatite, Franklin Mine, Franklin, Sussex County, New Jersey, USA

Description: Occurs in gneissic rock adjacent to pegmatitic sills.

ⓘ Bornite

Formula: Cu5FeS4

✪ Bostwickite (TL)

Formula: CaMn3+6Si3O16 · 7H2O

Type Locality:

Description: Occurs in ore within the Franklin orebody.

ⓘ Breithauptite

Formula: NiSb

Description: Occurred in the unique nickel-cobalt-arsenic assemblage.

ⓘ Brianyoungite

Formula: Zn3(CO3,SO4)(OH)4

ⓘ Brookite

Formula: TiO2

Localities:

Buckwheat pit, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Mill site dump, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Buckwheat dump mineral collecting site, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Cross-Fault Quarry, Franklin Borough, Franklin, Sussex County, New Jersey, USA

Description: Occurs as small crystals in cavities in the Buckwheat Dolomite.

ⓘ Brucite

Formula: Mg(OH)2

ⓘ Bultfonteinite

Formula: Ca2(HSiO4)F · H2O

ⓘ Bustamite (TL)

Formula: CaMn2+(Si2O6)

Localities:

Franklin Mine, Franklin, Sussex County, New Jersey, USA
Mill site dump, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Buckwheat dump mineral collecting site, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Trotter Mine, Franklin Mine, Franklin, Sussex County, New Jersey, USA

Habit: Blocky prismatic

Colour: Pale to medium pink, rarely rich dark pink

Fluorescence: Magenta red (LW UV) (rare)

✪ Cahnite (TL)

Formula: Ca2[B(OH)4](AsO4)

Type Locality:

References:

Palache, Charles, Berman, Harry, Frondel, Clifford (1951) The System of Mineralogy (7th ed.) Vol. 2 - Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Ect. John Wiley and Sons, New York.

ⓘ Calcite

Formula: CaCO3

Localities: Reported from at least 18 localities in this region.

ⓘ ~~Carminite~~

Formula: PbFe3+2(AsO4)2(OH)2

Description: Re-identified as a new mineral, jarosewichite

ⓘ ~~Carrollite~~

Formula: CuCo2S4

Description: Reputedly found as sub-millimeter crystals in bornite. Contact with the person cited (Burke, E.A.J. (2013) personal communication) resulted in a disavowal of the cited 1983 personal communication. The mineral seems to have suffered from miscommunication.

✪ Caryopilite

Formula: Mn2+3Si2O5(OH)4

Colour: Brown

Fluorescence: None.

Description: Occurs in a restricted assemblage only at this mine.

ⓘ Celestine

Formula: SrSO4

Localities:

Franklin, Sussex County, New Jersey, USA
Franklin Mine, Franklin, Sussex County, New Jersey, USA
Buckwheat dump mineral collecting site, Franklin Mine, Franklin, Sussex County, New Jersey, USA

ⓘ Celsian

Formula: Ba(Al2Si2O8)

Localities:

Franklin Mine, Franklin, Sussex County, New Jersey, USA
Parker shaft, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Mill site dump, Franklin Mine, Franklin, Sussex County, New Jersey, USA

ⓘ Cerussite

Formula: PbCO3

ⓘ Chabazite-Ca

Formula: (Ca,K2,Na2)2[Al2Si4O12]2 · 12H2O

ⓘ Chalcocite

Formula: Cu2S

ⓘ Chalcopyrite

Formula: CuFeS2

Localities:

Gooseberry Mine, Balls Hill Iron Mines, Franklin, Sussex County, New Jersey, USA
Buckwheat pit, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Franklin Mine, Franklin, Sussex County, New Jersey, USA
Mill site dump, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Buckwheat dump mineral collecting site, Franklin Mine, Franklin, Sussex County, New Jersey, USA

Description: Occurs in conjunction with a magnetite orebody hosted in Cork Hill gneiss at its contact with Precambrian Franklin marble.

ⓘ Chamosite

Formula: (Fe2+)5Al(Si,Al)4O10(OH,O)8

Localities:

Buckwheat pit, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Buckwheat dump mineral collecting site, Franklin Mine, Franklin, Sussex County, New Jersey, USA

ⓘ Charlesite (TL)

Formula: Ca6(Al,Si)2(SO4)2[B(OH)4](OH,O)12 · 26H2O

Localities:

Franklin Mine, Franklin, Sussex County, New Jersey, USA
Parker shaft, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Mill site dump, Franklin Mine, Franklin, Sussex County, New Jersey, USA

Description: Was initially described as ettringite.

ⓘ Chloritoid

Formula: Fe2+Al2O(SiO4)(OH)2

Localities:

Buckwheat pit, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Buckwheat dump mineral collecting site, Franklin Mine, Franklin, Sussex County, New Jersey, USA

Description: Occurs as thin blackish films on fracture surfaces in massive andradite garnet. Limited number of specimens, perhaps only 2.

ⓘ Chlorophoenicite (TL)

Formula: (Mn,Mg)3Zn2(AsO4)(OH,O)6

Localities:

Buckwheat pit, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Buckwheat dump mineral collecting site, Franklin Mine, Franklin, Sussex County, New Jersey, USA

ⓘ Chondrodite

Formula: Mg5(SiO4)2F2

Localities:

Franklin Quarry, Franklin Marble, Franklin, Sussex County, New Jersey, USA
Buckwheat pit, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Fowler Quarry (Nichol Quarry; B. Nicoll Quarry; Nicoll Quarry; Nicol Quarry; Cellate Quarry), Franklin Marble, Franklin, Sussex County, New Jersey, USA

ⓘ Chrysocolla

Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1

ⓘ Chrysotile

Formula: Mg3(Si2O5)(OH)4

Localities:

Franklin, Sussex County, New Jersey, USA
Franklin Mine, Franklin, Sussex County, New Jersey, USA
Trotter Mine, Franklin Mine, Franklin, Sussex County, New Jersey, USA

✪ Cianciulliite (TL)

Formula: Mn(Mg,Mn)2Zn2(OH)10 · 2-4H2O

Type Locality:

Description: A single specimen only with two additional suspected specimens (Franklin Mineral Museum assets).

References:

Dunn, Pete J., Grice, Joel D., Criddle, Alan, Stanley, Chris (1991) Cianciulliite, a new magnesium manganese zinc hydroxide from Franklin, New Jersey. American Mineralogist, 76 (9-10) 1708-1710

ⓘ Clinochlore

Formula: Mg5Al(AlSi3O10)(OH)8

Localities:

Franklin Mine, Franklin, Sussex County, New Jersey, USA
Mill site dump, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Franklin Quarry, Franklin Marble, Franklin, Sussex County, New Jersey, USA
Buckwheat dump mineral collecting site, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Buckwheat pit, Franklin Mine, Franklin, Sussex County, New Jersey, USA

ⓘ 'Clinochrysotile'

ⓘ Clinohedrite (TL)

Formula: CaZn(SiO4) · H2O

Localities:

Franklin Mine, Franklin, Sussex County, New Jersey, USA
Parker shaft, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Mill site dump, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Buckwheat dump mineral collecting site, Franklin Mine, Franklin, Sussex County, New Jersey, USA

ⓘ Clino-suenoite

Formula: ◻{Mn2+2}{Mg5}(Si8O22)(OH)2

Localities:

Franklin Mine, Franklin, Sussex County, New Jersey, USA
Trotter Mine, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Franklin, Sussex County, New Jersey, USA
Buckwheat dump mineral collecting site, Franklin Mine, Franklin, Sussex County, New Jersey, USA

ⓘ Clinozoisite

Formula: (CaCa)(AlAlAl)O[Si2O7][SiO4](OH)

Description: Occurs in pegmatitic sills.

ⓘ Copper

Formula: Cu

Localities:

Franklin Mine, Franklin, Sussex County, New Jersey, USA
Parker shaft, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Mill site dump, Franklin Mine, Franklin, Sussex County, New Jersey, USA

Colour: Copper-red

Fluorescence: None

Description: Occurs embedded in massive ore minerals as specks, sheets and masses.

ⓘ Corundum

Formula: Al2O3

ⓘ Cuprite

Formula: Cu2O

ⓘ Cuprostibite

Formula: Cu2(Sb,Tl)

Fluorescence: None.

Description: Occurs as microscopic inclusions in a gray, massive willemite matrix associated with copper and domeykite.

ⓘ Cuspidine

Formula: Ca8(Si2O7)2F4

✪ Cyprine

Formula: Ca19Cu2+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10](OH)(OH)9

Habit: Masses, coarsely fibrous

Colour: Vivid blue, Dark blue, dark green

Fluorescence: None.

Description: Fitzgerald et al. (1986), Amer. Mineral. 71, 1011-1014. 1.91% CuO, 0.74 Cu p.f.u, Cu > Mn or Fe in Y.

ⓘ Datolite

Formula: CaB(SiO4)(OH)

Localities:

Franklin Mine, Franklin, Sussex County, New Jersey, USA
Parker shaft, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Mill site dump, Franklin Mine, Franklin, Sussex County, New Jersey, USA

ⓘ Datolite var. Bakerite

Formula: Ca4(H5B5Si3O20)

ⓘ Datolite var. Botryolite

ⓘ Diopside

Formula: CaMgSi2O6

Localities:

Franklin, Sussex County, New Jersey, USA
Franklin Quarry, Franklin Marble, Franklin, Sussex County, New Jersey, USA
Mill site dump, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Franklin Mine, Franklin, Sussex County, New Jersey, USA
Trotter Mine, Franklin Mine, Franklin, Sussex County, New Jersey, USA

ⓘ Diopside var. Schefferite

Formula: (Ca,Mn)(Mg,Fe,Mn)Si2O6

ⓘ Diopside var. Zinc-Schefferite

Formula: Ca(Mg,Mn,Zn)Si2O6

ⓘ Dolomite

Formula: CaMg(CO3)2

Localities: Reported from at least 8 localities in this region.

ⓘ Domeykite

Formula: Cu3As

Description: Occurs as microscopic inclusion in massive gray willemite associated with copper and cuprostibite.

ⓘ Dravite

Formula: NaMg3Al6(Si6O18)(BO3)3(OH)3(OH)

ⓘ Edenite

Formula: NaCa2Mg5(Si7Al)O22(OH)2

Localities:

Franklin Quarry, Franklin Marble, Franklin, Sussex County, New Jersey, USA
Franklin Iron Company Quarry (Pistol Range Quarry; Rifle Range Quarry), Franklin Marble, Franklin, Sussex County, New Jersey, USA
Mill site dump, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Fowler Quarry (Nichol Quarry; B. Nicoll Quarry; Nicoll Quarry; Nicol Quarry; Cellate Quarry), Franklin Marble, Franklin, Sussex County, New Jersey, USA

ⓘ 'Edenite-Pargasite Root Name Series'

Formula:

References:

Lupulescu, M. V., Rakovan, J., Dyar, M. D., Robinson, G. W., Hughes, J. M. (2009) Fluoro-potassichastingsite from the Greenwood mine, Orange County, New York: A new end-member calcic amphibole. The Canadian Mineralogist, 47 (4) 909-916 doi:10.3749/canmin.47.3.909

ⓘ Epidote

Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)

Localities:

Franklin Mine, Franklin, Sussex County, New Jersey, USA
Gooseberry Mine, Balls Hill Iron Mines, Franklin, Sussex County, New Jersey, USA
Buckwheat dump mineral collecting site, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Canfield Mica locality, Franklin Marble, Franklin, Sussex County, New Jersey, USA
Palmer shaft, Franklin Mine, Franklin, Sussex County, New Jersey, USA

ⓘ 'Epidote Group'

Formula: (A12+A22+)(M13+M23+M33+)O[Si2O7][SiO4](OH)

ⓘ Epidote-(Sr)

Formula: (CaSr)(AlAlFe3+)O[Si2O7][SiO4](OH)

Description: occurs as high-z near-rim bands in complexly zoned crystals of (Sr+Pb)-bearing epidote (cores) to Sr-bearing hancockite (rims), intergrown with barite, within massive epidote/hancockite, andradite, and franklinite rock. Hendricksite and cpx(?; not analyzed) are also present.

ⓘ Esperite (TL)

Formula: PbCa2Zn3(SiO4)3

Localities:

Parker shaft, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Franklin Mine, Franklin, Sussex County, New Jersey, USA
Mill site dump, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Buckwheat dump mineral collecting site, Franklin Mine, Franklin, Sussex County, New Jersey, USA

Habit: massive

Colour: white to creamy, dingy

Fluorescence: bright yellow-green

Description: Massive, in nodules up to 15 cm, associated with hardystonite, willemite, franklinite, less commonly calcite, clinohedrite, and axinite-(Mn).

ⓘ Fayalite

Formula: Fe2+2SiO4

Localities:

Franklin, Sussex County, New Jersey, USA
Franklin Mine, Franklin, Sussex County, New Jersey, USA
Buckwheat pit, Franklin Mine, Franklin, Sussex County, New Jersey, USA

ⓘ Fayalite var. Roepperite (of Brush)

Formula: (Fe2+,Mn,Zn)2SiO4

ⓘ Feitknechtite (TL)

Formula: Mn3+O(OH)

Type Locality:

ⓘ Ferriakasakaite-(La)

Formula: (CaLa)(Fe3+AlMn2+)O[Si2O7][SiO4](OH)

Description: Verified by both microprobe chemical analysis and Raman Spectroscopy

ⓘ Ferro-actinolite

Formula: ◻Ca2Fe2+5(Si8O22)(OH)2

ⓘ Ferro-hornblende

Formula: ◻Ca2(Fe2+4Al)(Si7Al)O22(OH)2

ⓘ Ferrokinoshitalite

Formula: (Ba,K)(Fe2+,Mg)3(Al2Si2O10)(OH,F)2

ⓘ Ferrorhodonite

Formula: CaMn3Fe[Si5O15]

ⓘ Fersmite

Formula: (Ca,Ce,Na)(Nb,Ta,Ti)2(O,OH,F)6

Description: Fersmite of the Euxenite Group has been verified by EMPA as inclusions and red-brown crystals associated with hydroxycalciopyrochlore.

ⓘ Flinkite

Formula: Mn2+2Mn3+(AsO4)(OH)4

Localities:

Buckwheat pit, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Buckwheat dump mineral collecting site, Franklin Mine, Franklin, Sussex County, New Jersey, USA

Description: Occurs associated with jarosewichite in cavities in massive andradite.

ⓘ Fluoborite

Formula: Mg3(BO3)(F,OH)3

ⓘ Fluorapatite

Formula: Ca5(PO4)3F

Localities: Reported from at least 8 localities in this region.

Description: Occurs in Precambrian Franklin marble.

ⓘ Fluorapophyllite-(K)

Formula: KCa4(Si8O20)(F,OH) · 8H2O

Localities:

Franklin Mine, Franklin, Sussex County, New Jersey, USA
Mill site dump, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Palmer shaft, Franklin Mine, Franklin, Sussex County, New Jersey, USA

ⓘ ~~Fluorapophyllite-(Na)~~

Formula: NaCa4(Si8O20)F · 8H2O

Description: Optical analysis gave a false positive for fluorapophyllite-(Na)

ⓘ ~~Fluorellestadite~~

Formula: Ca5(SiO4)1.5(SO4)1.5F

Description: A mineral was circulated commercially as fluorellestadite about the year 2000. Recent EDS indicates an absence of Si. The mineral seems to be an arsenatian johnbaumite.

ⓘ Fluorite

Formula: CaF2

Localities: Reported from at least 11 localities in this region.

ⓘ Fluorite var. Chlorophane

Formula: CaF2

ⓘ Fluoro-edenite ?

Formula: NaCa2Mg5(Si7Al)O22F2

Description: No data presented

ⓘ Fluoro-pargasite

Formula: NaCa2(Mg4Al)(Si6Al2)O22F2

Localities:

Balls Hill Iron Mines, Franklin, Sussex County, New Jersey, USA
Fowler Quarry (Nichol Quarry; B. Nicoll Quarry; Nicoll Quarry; Nicol Quarry; Cellate Quarry), Franklin Marble, Franklin, Sussex County, New Jersey, USA
Franklin Quarry, Franklin Marble, Franklin, Sussex County, New Jersey, USA

ⓘ Fluorophlogopite

Formula: KMg3(Si3Al)O10F2

Localities:

Fowler Quarry (Nichol Quarry; B. Nicoll Quarry; Nicoll Quarry; Nicol Quarry; Cellate Quarry), Franklin Marble, Franklin, Sussex County, New Jersey, USA
Franklin, Sussex County, New Jersey, USA
Canfield Mica locality, Franklin Marble, Franklin, Sussex County, New Jersey, USA
Franklin Iron Company Quarry (Pistol Range Quarry; Rifle Range Quarry), Franklin Marble, Franklin, Sussex County, New Jersey, USA
Franklin Quarry, Franklin Marble, Franklin, Sussex County, New Jersey, USA

Habit: Columnar crystals

Colour: Brown

Fluorescence: Yellow

Description: Chemical analyses (Dunn, 1995) show that this mica in near end-member fluorophlogopite according to IMA nomenclature of 1999.

ⓘ Fluor-uvite (TL)

Formula: CaMg3(Al5Mg)(Si6O18)(BO3)3(OH)3F

Localities: Reported from at least 6 localities in this region.

Habit: Crystals show first and second order prism and first and second order trigonal pyramids. The crystal habit is equant to only slightly elongated along "c". Oftentimes, the crystals are asymmetrical.

Colour: Full range of light to dark greens including olive green and brownish green through greenish brown.

Fluorescence: Orange yellow in short wave ultraviolet

ⓘ 'Fluor-uvite-Uvite Series'

Localities:

Mill site dump, Franklin Mine, Franklin, Sussex County, New Jersey, USA

~~Fowler Quarry (Nichol Quarry; B. Nicoll Quarry; Nicoll Quarry; Nicol Quarry; Cellate Quarry), Franklin Marble, Franklin, Sussex County, New Jersey, USA~~

(more information)

~~Franklin Iron Company Quarry (Pistol Range Quarry; Rifle Range Quarry), Franklin Marble, Franklin, Sussex County, New Jersey, USA~~

(more information)

~~Furnace Quarry, Franklin Marble, Franklin, Sussex County, New Jersey, USA~~

(more information)

✪ Franklinfurnaceite (TL)

Formula: Ca2Fe3+Mn2+3Mn3+(Zn2Si2O10)(OH)8

Type Locality:

ⓘ Franklinite (TL)

Formula: Zn2+Fe3+2O4

Localities: Reported from at least 10 localities in this region.

Habit: Octahedral, dodecahedral

Colour: Black

Fluorescence: None

Description: Prolific basic ore mineral. Manganese percentage varies markedly to isolated occurrences of jacobsite.

ⓘ Franklinphilite (TL)

Formula: (K,Na)4(Mn2+,Mg,Zn)48(Si,Al)72(O,OH)216 · 6H2O

Type Locality:

ⓘ Friedelite

Formula: Mn2+8Si6O15(OH,Cl)10

Localities:

Franklin Mine, Franklin, Sussex County, New Jersey, USA
Taylor Mine, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Buckwheat pit, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Mill site dump, Franklin Mine, Franklin, Sussex County, New Jersey, USA

✪ Gageite (TL)

Formula: Mn21(Si4O12)2O3(OH)20

Type Locality:

ⓘ 'Gageite-2M' (FRL)

Formula: (Mn,Mg,Zn)42Si16O54(OH)40

Type Locality:

ⓘ Gahnite

Formula: ZnAl2O4

Localities:

Buckwheat pit, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Trotter Mine, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Franklin Mine, Franklin, Sussex County, New Jersey, USA
Mill site dump, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Franklin, Sussex County, New Jersey, USA

Habit: Rare cubic habit in adjacent tunnel.

Colour: Dark green.

ⓘ Galena

Formula: PbS

Localities:

Franklin Mine, Franklin, Sussex County, New Jersey, USA
Franklin Quarry, Franklin Marble, Franklin, Sussex County, New Jersey, USA
Trotter Mine, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Buckwheat pit, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Mill site dump, Franklin Mine, Franklin, Sussex County, New Jersey, USA

ⓘ Ganomalite

Formula: Pb9Ca5Mn(Si2O7)4(SiO4)O

ⓘ Ganophyllite

Formula: (K,Na,Ca)2Mn8(Si,Al)12(O,OH)32 · 8H2O

ⓘ 'Garnet Group'

Formula: X3Z2(SiO4)3

Description: Occurs in pegmatitic sills.

ⓘ Genthelvite

Formula: Be3Zn4(SiO4)3S

Localities:

Buckwheat pit, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Franklin Mine, Franklin, Sussex County, New Jersey, USA
Trotter Mine, Franklin Mine, Franklin, Sussex County, New Jersey, USA

Description: Occurs in the petedunnite assemblage with willemite and other species.

ⓘ Gersdorffite

Formula: NiAsS

✪ Glaucochroite (TL)

Formula: CaMn2+SiO4

Type Locality:

Colour: blue, blue-gray, tan

Fluorescence: None.

ⓘ Glaucodot

Formula: (Co0.50Fe0.50)AsS

Description: Occurs in the unique nickel-cobalt-arsenic assemblage.

ⓘ Goethite

Formula: α-Fe3+O(OH)

Localities: Reported from at least 7 localities in this region.

ⓘ Gonyerite

Formula: (Mn2+,Mg)5Fe3+(Fe3+Si3O10)(OH)8

Localities:

Franklin Mine, Franklin, Sussex County, New Jersey, USA
Taylor Road dumps, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Buckwheat dump mineral collecting site, Franklin Mine, Franklin, Sussex County, New Jersey, USA

ⓘ Graphite

Formula: C

Localities: Reported from at least 7 localities in this region.

ⓘ Greenockite

Formula: CdS

References:

ⓘ Grossular

Formula: Ca3Al2(SiO4)3

Localities:

Franklin, Sussex County, New Jersey, USA
Buckwheat dump mineral collecting site, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Buckwheat pit, Franklin Mine, Franklin, Sussex County, New Jersey, USA

ⓘ Grossular var. Caswellite

Formula: Ca3Al2(SiO4)3

ⓘ Groutite

Formula: Mn3+O(OH)

ⓘ Grunerite

Formula: ◻{Fe2+2}{Fe2+5}(Si8O22)(OH)2

Habit: Acicular

Colour: Pale yellow-green

Description: Occurs as distinct feathery to flat spherical aggregates to 1 cm diameter of fine needles on matrix.

ⓘ Gypsum

Formula: CaSO4 · 2H2O

ⓘ Hancockite (TL)

Formula: (CaPb)(AlAlFe3+)O[Si2O7][SiO4](OH)

Localities:

Habit: Crystals found in the vugs of the massive hancockite are prismatic and normally striated along the longest axis.

Colour: brownish-red, maroon

Description: Hancockite is found in the calcium silicate units of the Franklin ore body

ⓘ Hardystonite (TL)

Formula: Ca2Zn[Si2O7]

Localities:

Franklin Mine, Franklin, Sussex County, New Jersey, USA
Parker shaft, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Mill site dump, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Buckwheat pit, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Buckwheat dump mineral collecting site, Franklin Mine, Franklin, Sussex County, New Jersey, USA

ⓘ Hastingsite

Formula: NaCa2(Fe2+4Fe3+)(Si6Al2)O22(OH)2

ⓘ Hauckite

Formula: Fe3+3(Mg,Mn2+)24Zn18(SO4)4(CO3)2(OH)81

ⓘ Hausmannite

Formula: Mn2+Mn3+2O4

Description: Occurs in ore within the Franklin orebody.

ⓘ Hawleyite

Formula: CdS

ⓘ Hedenbergite

Formula: CaFe2+Si2O6

Localities: Reported from at least 6 localities in this region.

ⓘ Hedyphane

Formula: Ca2Pb3(AsO4)3Cl

ⓘ Hellandite-(Y)

Formula: (Ca,REE)4Y2Al◻2(B4Si4O22) (OH)2

Description: The hellandite-(Y) occurs on a single specimen from the Franklin mine. Remarkably, the species occurs as a secondary mineral, not a primary pegmatitic mineral as is usually the case. It occurs on another, earlier secondary mineral (rhodochrosite).

ⓘ Hematite

Formula: Fe2O3

Localities: Reported from at least 6 localities in this region.

Description: Massive hematite at the Franklin mine exhibits a unique cubic parting.

ⓘ Hemimorphite

Formula: Zn4Si2O7(OH)2 · H2O

Localities:

Buckwheat pit, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Franklin Mine, Franklin, Sussex County, New Jersey, USA
Franklin, Sussex County, New Jersey, USA
Buckwheat dump mineral collecting site, Franklin Mine, Franklin, Sussex County, New Jersey, USA

ⓘ Hendricksite (TL)

Formula: KZn3(Si3Al)O10(OH)2

Localities: Reported from at least 7 localities in this region.

ⓘ Hercynite

Formula: Fe2+Al2O4

ⓘ Hetaerolite

Formula: ZnMn2O4

ⓘ Heulandite-Ca

Formula: (Ca,Na)5(Si27Al9)O72 · 26H2O

ⓘ 'Heulandite Subgroup'

Formula: (Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O

Localities:

Buckwheat pit, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Buckwheat dump mineral collecting site, Franklin Mine, Franklin, Sussex County, New Jersey, USA

ⓘ Hodgkinsonite (TL)

Formula: Mn2+Zn2(SiO4)(OH)2

Localities:

Franklin Mine, Franklin, Sussex County, New Jersey, USA
Hamburg Mine, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Mill site dump, Franklin Mine, Franklin, Sussex County, New Jersey, USA

Colour: Colorless, pale lilac, purple

Fluorescence: None.

ⓘ Holdenite (TL)

Formula: (Mn2+,Mg)6Zn3(AsO4)2(SiO4)(OH)8

Habit: Equant to thick tabular {100}.

Colour: Pink, yellowish red

ⓘ 'Hornblende Root Name Group'

Formula: ◻Ca2(Z2+4Z3+)(AlSi7O22)(OH,F,Cl)2

Localities:

Franklin Iron Furnace foundation excavation, Franklin, Sussex County, New Jersey, USA
Franklin Mine, Franklin, Sussex County, New Jersey, USA
Wildcat Branch feldspar deposit, Franklin Borough, Franklin, Sussex County, New Jersey, USA

Description: Occurs in Precambrian Franklin marble.

ⓘ Hübnerite

Formula: MnWO4

ⓘ Humite

Formula: Mg7(SiO4)3F2

ⓘ 'Humite Group'

ⓘ Hydrocerussite

Formula: Pb3(CO3)2(OH)2

ⓘ 'Hydrohausmannite' (FRL)

Type Locality:

ⓘ Hydrotalcite

Formula: Mg6Al2(CO3)(OH)16 · 4H2O

ⓘ Hydroxyapophyllite-(K)

Formula: KCa4(Si8O20)(OH,F) · 8H2O

ⓘ Hydroxycalciopyrochlore

Formula: (Ca,Na,U,◻)2(Nb,Ti)2O6(OH)

ⓘ Hydroxycalcioroméite

Formula: (Ca,Sb3+)2(Sb5+,Ti)2O6(OH)

ⓘ Hydroxylapatite

Formula: Ca5(PO4)3(OH)

ⓘ Hydroxylclinohumite

Formula: Mg9(SiO4)4(OH)2

ⓘ Hydrozincite

Formula: Zn5(CO3)2(OH)6

Localities:

Trotter Mine, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Mill site dump, Franklin Mine, Franklin, Sussex County, New Jersey, USA

Description: Occurs in ore within the Franklin orebody.

ⓘ Ilmenite

Formula: Fe2+TiO3

Localities:

Colour: Black.

Description: Ilmenite and Albite occur at the contact surfaces between Franklin marble and intruded "camptonite" basaltic dikes.

ⓘ Jacobsite

Formula: Mn2+Fe3+2O4

ⓘ Jarosewichite (TL)

Formula: Mn2+3Mn3+(AsO4)(OH)6

Localities:

Buckwheat pit, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Buckwheat dump mineral collecting site, Franklin Mine, Franklin, Sussex County, New Jersey, USA

Description: Occurs associated with flinkite in massive andradite and franklinite.

ⓘ Jarosite

Formula: KFe3+3(SO4)2(OH)6

Colour: Dark brown

Description: A post-mining product formed on the dump. Occurred as a thick, dark brown coating of hard, mud-like material covering chunks of camptonite rock containing sulfides (pyrite, sphalerite).

ⓘ 'Jeffersonite'

Formula: Ca(Mn,Zn,Fe)Si2O6

ⓘ Jerrygibbsite (TL)

Formula: Mn2+9(SiO4)4(OH)2

Type Locality:

Habit: anhedral

Colour: medium violet-pink in color. The mineral resembles some leucophoenicites, but is decidedly more brown and violet-colored than most leucophoenicite

Description: Jerrygibbsite occurs as a massive mineral in interlocking, anhedral crystals reaching 0.5 x 2.0 mm, which display a typical metamorphic texture; there are no euhedral crystals. Jerrygibbsite has not been found associated with any Ca-bearing minerals

References:

Dunn, Pete J., Peacor, Donald R., Simmons, William B., Essene, Eric J. (1984) Jerrygibbsite, a new polymorph of (Mn9SiO4)4(OH)2 from Franklin, New Jersey, with new data on leucophoenicite. American Mineralogist, 69 (5-6) 546-552

ⓘ Johannsenite (TL)

Formula: CaMn2+Si2O6

ⓘ Johnbaumite (TL)

Formula: Ca5(AsO4)3(OH)

ⓘ Junitoite

Formula: CaZn2Si2O7 · H2O

Description: A single specimen of junitoite has been verified from the Franklin Mine.

ⓘ Kentrolite

Formula: Pb2Mn3+2(Si2O7)O2

ⓘ Kittatinnyite (TL)

Formula: Ca2Mn2Mn(SiO4)2(OH)4 · 9H2O

Type Locality:

Description: Occurs in ore within the Franklin orebody.

ⓘ Kolicite

Formula: Mn2+7Zn4(AsO4)2(SiO4)2(OH)8

ⓘ Kutnohorite

Formula: CaMn2+(CO3)2

ⓘ Larsenite (TL)

Formula: PbZnSiO4

Habit: Acicular to long-prismatic

Colour: Colourless, white

Fluorescence: None.

Description: Acicular to long-prismatic, colourless crystals in fracture surface cavities traversing willemite-franklinite ore with esperite present. The type locality for larsenite is the Franklin MIne, not the Parker Shaft. Palache (1935) makes it clear: "Larsenite was first found in 1928 and, with the closely related, was described in papers by Palache, Bauer, and Berman (256, 259). The first specimens were found on the picking table at Franklin, and the mineral was afterwards located in the mine at the north end, 20 feet above the 400-foot level in top slice 1080."

ⓘ Lead

Formula: Pb

Localities:

Franklin Mine, Franklin, Sussex County, New Jersey, USA
Parker shaft, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Mill site dump, Franklin Mine, Franklin, Sussex County, New Jersey, USA

ⓘ Lennilenapeite (TL)

Formula: K6-7(Mg,Mn,Fe,Zn)48(Si,Al)72(O,OH)216 · 16H2O

ⓘ Leucophoenicite (TL)

Formula: Mn2+7(SiO4)3(OH)2

Localities:

Franklin Mine, Franklin, Sussex County, New Jersey, USA
Buckwheat pit, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Mill site dump, Franklin Mine, Franklin, Sussex County, New Jersey, USA

Habit: commonly prismatic, although tabular crystals are known.

Colour: commonly some shade of pink, but violet-red and brownish-red hues are known.

Description: occurs in secondary veins and vuggy assemblages, both as massive material and as euhedral crystals. It has been found in several different mineral assemblages in these veins, and is also found in calcium-rich primary ore, hydroxyl-bearing ore assemblages, and recrystallized aggregates. In vein assemblages, leucophoenicite crystallizes late, commonly contemporaneously with willemite, the most commonly associated mineral. Crystals of leucophoenicite appear to be confined to open hydrothermal veins.

ⓘ Litharge

Formula: PbO

Description: Micromount specimen from the Steve Pullman collection. "Verified," but method not stated. Several specimens of Franklin litharge are known and are associated with relatively thick lead. (Noted by Steven Kuitems and Pete Dunn.)

ⓘ Lizardite

Formula: Mg3(Si2O5)(OH)4

Localities:

Buckwheat pit, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Franklin Mine, Franklin, Sussex County, New Jersey, USA
Buckwheat dump mineral collecting site, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Trotter Mine, Franklin Mine, Franklin, Sussex County, New Jersey, USA

ⓘ Löllingite

Formula: FeAs2

Localities:

Trotter Mine, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Buckwheat pit, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Franklin Mine, Franklin, Sussex County, New Jersey, USA
Mill site dump, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Buckwheat dump mineral collecting site, Franklin Mine, Franklin, Sussex County, New Jersey, USA

Description: Occurs in the unique nickel-cobalt-arsenic assemblage.

✪ Loseyite (TL)

Formula: (Mn2+,Zn,Mg)4Zn3(CO3)2(OH)10

Type Locality:

ⓘ Macfallite

Formula: Ca2Mn3+3(SiO4)(Si2O7)(OH)3

ⓘ Magnesiochlorophoenicite (TL)

Formula: (Mg,Mn)3Zn2(AsO4)(OH,O)6

Type Locality:

References:

ⓘ Magnesio-fluoro-hastingsite

Formula: NaCa2(Mg4Fe3+)(Si6Al2)O22F2

ⓘ Magnesio-hornblende

Formula: ◻Ca2(Mg4Al)(Si7Al)O22(OH)2

Localities:

Franklin Quarry, Franklin Marble, Franklin, Sussex County, New Jersey, USA
Mill site dump, Franklin Mine, Franklin, Sussex County, New Jersey, USA

ⓘ Magnesio-riebeckite

Formula: ◻{Na2}{Mg3Fe3+2}(Si8O22)(OH)2

Localities:

Trotter Mine, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Franklin Mine, Franklin, Sussex County, New Jersey, USA
Mill site dump, Franklin Mine, Franklin, Sussex County, New Jersey, USA

Description: Occurs as light blue to blue-gray masses of finely fibrous material associated with sphalerite, calcite and lennilenapeite.

ⓘ Magnetite

Formula: Fe2+Fe3+2O4

Localities: Reported from at least 21 localities in this region.

ⓘ Malachite

Formula: Cu2(CO3)(OH)2

Localities:

Franklin Quarry, Franklin Marble, Franklin, Sussex County, New Jersey, USA
Mill site dump, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Buckwheat dump mineral collecting site, Franklin Mine, Franklin, Sussex County, New Jersey, USA

✪ Manganberzeliite

Formula: (NaCa2)Mn2+2(AsO4)3

ⓘ Manganhumite

Formula: (Mn2+,Mg)7(SiO4)3(OH)2

ⓘ Manganite

Formula: Mn3+O(OH)

ⓘ Manganosite

Formula: MnO

Localities:

Taylor Mine, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Franklin Mine, Franklin, Sussex County, New Jersey, USA
Trotter Mine, Franklin Mine, Franklin, Sussex County, New Jersey, USA

Fluorescence: None.

Description: Occurs in ore within the Franklin orebody.

ⓘ ~~Manganvesuvianite~~

Formula: Ca19Mn3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9

Description: Manganoan vesuvianite is common at Franklin, but manganian vesuvianite is unknown. The name, manganvesuvianite, should not be confused with manganoan vesuvianite.

ⓘ Marcasite

Formula: FeS2

Localities:

Franklin Quarry, Franklin Marble, Franklin, Sussex County, New Jersey, USA
Franklin Iron Furnace foundation excavation, Franklin, Sussex County, New Jersey, USA
Buckwheat pit, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Buckwheat dump mineral collecting site, Franklin Mine, Franklin, Sussex County, New Jersey, USA

ⓘ Margarite

Formula: CaAl2(Al2Si2O10)(OH)2

Localities:

Franklin Quarry, Franklin Marble, Franklin, Sussex County, New Jersey, USA
Mill site dump, Franklin Mine, Franklin, Sussex County, New Jersey, USA

ⓘ Margarosanite (TL)

Formula: Pb(Ca,Mn2+)2(Si3O9)

Localities:

ⓘ Marialite

Formula: Na4Al3Si9O24Cl

Habit: elongated prismatic

Colour: pale yellow

Fluorescence: creamy white to pink under SW UV

Description: Crystals in the Harvard Mineralogical and Geological Museum collection have been analyzed (I don't recall with what method) but are marialite. The best one is depicted in The Mineralogy of Franklin and Ogdensburg, New Jersey (2021) page 286.

✪ Marsturite (TL)

Formula: NaCaMn3Si5O14(OH)

Type Locality:

Colour: Tan

Fluorescence: None.

Description: Grows epitaxially on bladed rhodonite crystals in open fractures in massive franklinite-willemite-zincite ore.

ⓘ Meionite

Formula: Ca4Al6Si6O24CO3

ⓘ Meionite var. Algerite (FRL)

Formula: Ca4Al6Si6O24CO3

Type Locality:

ⓘ 'Mica Group'

Description: Occurs in Precambrian Franklin marble.

ⓘ Microcline

Formula: K(AlSi3O8)

Localities: Reported from at least 8 localities in this region.

Colour: Whitish, green, dark green, blackish-green

Fluorescence: Blue-gray to bluish (SW)

Description: Occurs in pegmatites and in ore adjacent to pegmatite intrusives, often as crystals.

ⓘ Microcline var. Amazonite

Formula: K(AlSi3O8)

Localities:

Mill site dump, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Buckwheat pit, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Double Rock pegmatite, Franklin Mine, Franklin, Sussex County, New Jersey, USA

ⓘ Microcline var. Hyalophane

Formula: (K,Ba)[Al(Si,Al)Si2O8]

ⓘ ~~Millerite~~

Formula: NiS

References:

ⓘ Mimetite

Formula: Pb5(AsO4)3Cl

✪ Minehillite (TL)

Formula: (K,Na)2-3Ca28Zn4Al4Si40O112(OH)16

Type Locality:

References:

Dunn, Pete J., Peacor, Donald R., Leavens, Peter B., Wicks, Frederick J. (1984) Minehillite, a new layer silicate from Franklin, New Jersey, related to reyerite and truscottite. American Mineralogist, 69 (11-12) 1150-1155

ⓘ 'Mineral B ("oyelite-like" mineral)'

Formula: Ca10Si8B2O29 · 12.5H2O

ⓘ 'Mineral E (of Dunn, et. al., 1982)'

ⓘ Molybdenite

Formula: MoS2

Localities:

Gooseberry Mine, Balls Hill Iron Mines, Franklin, Sussex County, New Jersey, USA
Buckwheat pit, Franklin Mine, Franklin, Sussex County, New Jersey, USA

Description: Occurs in conjunction with a magnetite orebody hosted in Cork Hill gneiss at its contact with Precambrian Franklin marble.

ⓘ Monazite-(Ce)

Formula: Ce(PO4)

Localities:

Buckwheat pit, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Buckwheat dump mineral collecting site, Franklin Mine, Franklin, Sussex County, New Jersey, USA

ⓘ Muscovite

Formula: KAl2(AlSi3O10)(OH)2

Localities: Reported from at least 6 localities in this region.

ⓘ Muscovite var. Oellacherite

Formula: KAl2(AlSi3O10)(OH)2

Colour: Pink

Description: Very fine-grained / massive material.

ⓘ Nasonite (TL)

Formula: Pb6Ca4(Si2O7)3Cl2

Localities:

Parker shaft, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Franklin Mine, Franklin, Sussex County, New Jersey, USA
Franklin, Sussex County, New Jersey, USA
Mill site dump, Franklin Mine, Franklin, Sussex County, New Jersey, USA

ⓘ Natrolite

Formula: Na2Al2Si3O10 · 2H2O

✪ Nelenite (TL)

Formula: (Mn,Fe)16(Si12O30)(OH)14[As3+3O6(OH)3]

Type Locality:

Description: Occurred approximately 50 feet South of the Trotter shaft, Franklin orebody.

ⓘ Neotocite

Formula: (Mn,Fe)SiO3 · H2O (?)

Description: Occurred in a thin vein in marble.

ⓘ Nickeline

Formula: NiAs

Description: Occurs in the unique nickel-cobalt-arsenic assemblage.

References:

Oen, I.S., Dunn, P.J., and Kieft, C., 1984, The nickel-arsenide assemblage from Franklin, New JerseyDescription and interpretation: Neues Jahrbuch fur Mineralogie Abhandlungen, v. 150, no. 3, p. 259272.

ⓘ Nickelskutterudite

Formula: NiAs3

ⓘ Norbergite

Formula: Mg3(SiO4)F2

Localities:

Franklin Quarry, Franklin Marble, Franklin, Sussex County, New Jersey, USA
Fowler Quarry (Nichol Quarry; B. Nicoll Quarry; Nicoll Quarry; Nicol Quarry; Cellate Quarry), Franklin Marble, Franklin, Sussex County, New Jersey, USA
Furnace Quarry, Franklin Marble, Franklin, Sussex County, New Jersey, USA
Franklin Iron Company Quarry (Pistol Range Quarry; Rifle Range Quarry), Franklin Marble, Franklin, Sussex County, New Jersey, USA

Description: Dunn (1995) gives the following account: “Fine, yellow, euhedral norbergite crystals, up to 25 mm in clusters to 3 x 2 x 2 cm, were found in the Franklin Quarry in 1982 and have the tabular habit figured by Palache. In this occurrence, norbergite is associated with calcite, hercynite, and phlogopite."

ⓘ Opal

Formula: SiO2 · nH2O

ⓘ 'Orthochrysotile'

ⓘ Orthoclase

Formula: K(AlSi3O8)

ⓘ Pararammelsbergite

Formula: NiAs2

Description: Occurs in the unique nickel-cobalt-arsenic assemblage.

References:

ⓘ Pargasite

Formula: NaCa2(Mg4Al)(Si6Al2)O22(OH)2

Localities:

Franklin, Sussex County, New Jersey, USA
Franklin Quarry, Franklin Marble, Franklin, Sussex County, New Jersey, USA
Fowler Quarry (Nichol Quarry; B. Nicoll Quarry; Nicoll Quarry; Nicol Quarry; Cellate Quarry), Franklin Marble, Franklin, Sussex County, New Jersey, USA

ⓘ Pectolite

Formula: NaCa2Si3O8(OH)

ⓘ Pennantite

Formula: Mn2+5Al(AlSi3O10)(OH)8

ⓘ Petedunnite (TL)

Formula: Ca(Zn,Mn2+,Mg,Fe2+)Si2O6

Localities:

Buckwheat pit, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Buckwheat dump mineral collecting site, Franklin Mine, Franklin, Sussex County, New Jersey, USA

Colour: Dark green.

Description: Occurs in a complex assemblage including genthelvite and willemite.

ⓘ Peterchinite (TL)

Formula: Zn3Zn2(OH)6As[O3(OH)3]

Type Locality:

ⓘ Phlogopite

Formula: KMg3(AlSi3O10)(OH)2

Localities: Reported from at least 8 localities in this region.

Description: Occurs in Precambrian Franklin marble adjacent to pegmatitic sills.

ⓘ 'Pimelite'

Formula: Ni3Si4O10(OH)2 · 4H2O

ⓘ 'Plagioclase'

Formula: (Na,Ca)[(Si,Al)AlSi2]O8

ⓘ Powellite

Formula: Ca(MoO4)

ⓘ Prehnite

Formula: Ca2Al2Si3O10(OH)2

Localities:

Franklin Mine, Franklin, Sussex County, New Jersey, USA
Mill site dump, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Parker shaft, Franklin Mine, Franklin, Sussex County, New Jersey, USA

ⓘ Pumpellyite-(Mg)

Formula: Ca2MgAl2[Si2O6OH][SiO4](OH)2(OH)

ⓘ Pyrite

Formula: FeS2

Localities: Reported from at least 11 localities in this region.

ⓘ Pyrobelonite

Formula: PbMn2+(VO4)(OH)

ⓘ 'Pyrochlore Group'

Formula: A2Nb2(O,OH)6Z

ⓘ Pyrochroite

Formula: Mn(OH)2

Localities:

Franklin Mine, Franklin, Sussex County, New Jersey, USA
Hamburg Mine, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Buckwheat pit, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Buckwheat dump mineral collecting site, Franklin Mine, Franklin, Sussex County, New Jersey, USA

ⓘ 'Pyroxene Group'

Formula: ADSi2O6

Description: Occurs in conjunction with a magnetite orebody hosted in Cork Hill gneiss at its contact with Precambrian Franklin marble.

✪ Pyroxferroite

Formula: (Fe,Mn,Ca)SiO3

Habit: Crystal section are prismatic with crude terminations.

Colour: Tan to yellow; crystals are black

Description: Originally found in a single specimen found on the Taylor Road dump and subsequently identified in specimens of a similar appearance. Vitreous. In gahnite-rich matrix. One specimen known with black crystal sections to 2 cm in a vein of rhodonite.

ⓘ Pyroxmangite

Formula: Mn2+SiO3

Description: Occurs in ore within the Franklin orebody.

ⓘ Pyrrhotite

Formula: Fe1-xS

Localities: Reported from at least 8 localities in this region.

ⓘ Quartz

Formula: SiO2

Localities: Reported from at least 10 localities in this region.

Description: Occurs as small crystals in the Buckwheat Dolomite cavities. Also a major component of the pegmatitic intrusives at the South end of the Franklin orebody, including the Buckwheat Pit area.

ⓘ Rammelsbergite

Formula: NiAs2

Description: Occurred in a restricted assemblage from the Trotter Mine within the Franklin orebody associated with other cobalt-nickel-arsenic species.

References:

ⓘ Rhodochrosite

Formula: MnCO3

Localities:

Franklin Mine, Franklin, Sussex County, New Jersey, USA
Hamburg Mine, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Buckwheat pit, Franklin Mine, Franklin, Sussex County, New Jersey, USA

ⓘ Rhodonite

Formula: CaMn3Mn[Si5O15]

Localities: Reported from at least 7 localities in this region.

Habit: tabular, blocky prismatic

Colour: Bright pink, red-pink, light pink, dark red-black

Fluorescence: None.

ⓘ Rhodonite var. Fowlerite (FRL)

Formula: (Mn2+,Zn,Ca)SiO3

ⓘ Ribbeite

Formula: Mn2+5(SiO4)2(OH)2

ⓘ Richterite

Formula: Na(NaCa)Mg5(Si8O22)(OH)2

ⓘ Roeblingite (TL)

Formula: Pb2Ca6Mn2+(Si3O9)2(SO4)2(OH)2 · 4H2O

Localities:

Parker shaft, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Franklin Mine, Franklin, Sussex County, New Jersey, USA
Mill site dump, Franklin Mine, Franklin, Sussex County, New Jersey, USA

ⓘ 'Roméite Group'

Formula: A2(Sb5+)2O6Z

ⓘ Rosasite

Formula: (Cu,Zn)2(CO3)(OH)2

✪ Roweite (TL)

Formula: Ca2Mn2+2B4O7(OH)6

Type Locality:

Habit: Narrow veinlet

Colour: Light brown

References:

ⓘ Rutile

Formula: TiO2

Localities:

Buckwheat pit, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Franklin Quarry, Franklin Marble, Franklin, Sussex County, New Jersey, USA
Franklin Iron Furnace foundation excavation, Franklin, Sussex County, New Jersey, USA
Furnace Quarry, Franklin Marble, Franklin, Sussex County, New Jersey, USA
Buckwheat dump mineral collecting site, Franklin Mine, Franklin, Sussex County, New Jersey, USA

Description: Occurs as small, lustrous crystals in Buckwheat Dolomite cavities. Originally mistaken for, and listed as, millerite.

ⓘ Safflorite

Formula: (Co,Ni,Fe)As2

Description: Occurs in the unique nickel-cobalt-arsenic assemblage.

References:

✪ Samfowlerite (TL)

Formula: Ca28Mn6Zn4(Be,Zn)4Be12[(OH)3(SiO4)3(Si2O7)2]4

Type Locality:

References:

Rouse, Roland C., Peacor, Donald Ralph, Dunn, Pete J., Su, Shu-Chun, Chi, Peter H., Yeates, Herb (1994) Samfowlerite, a new Ca Mn Zn beryllosilicate mineral from Franklin, New Jersey: its characterization and crystal structure. The Canadian Mineralogist, 32 (1) 43-53

ⓘ Saponite

Formula: Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O

ⓘ Sarkinite

Formula: Mn2+2(AsO4)(OH)

ⓘ 'Scapolite'

Localities:

Gooseberry Mine, Balls Hill Iron Mines, Franklin, Sussex County, New Jersey, USA
Mill site dump, Franklin Mine, Franklin, Sussex County, New Jersey, USA

ⓘ Schallerite (TL)

Formula: Mn2+16As3Si12O36(OH)17

ⓘ Scheelite

Formula: Ca(WO4)

✪ Sclarite (TL)

Formula: Zn7(CO3)2(OH)10

Type Locality:

ⓘ Sepiolite

Formula: Mg4(Si6O15)(OH)2 · 6H2O

ⓘ 'Serpentine Subgroup'

Formula: D3[Si2O5](OH)4

Description: This entry is made to cover specimens of minerals in the group which have not been differentiated by species.

ⓘ Siderite

Formula: FeCO3

ⓘ Silver

Formula: Ag

ⓘ ~~Simonkolleite~~

Formula: Zn5Cl2(OH)8 · H2O

Description: Suspicious identification without data and source refuses to provide even the method of identification. Specimen submitted to RRUFF showed that simonkolleite was absent on the specimen. Associated species were typical of Franklin matrix: esperite, willemite, franklinite, etc.

ⓘ Skutterudite

Formula: CoAs3

Description: Occurred in the unique nickel-cobalt-arsenic assemblage.

References:

ⓘ Smithsonite

Formula: ZnCO3

Localities:

Franklin Mine, Franklin, Sussex County, New Jersey, USA
Trotter Mine, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Buckwheat pit, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Buckwheat dump mineral collecting site, Franklin Mine, Franklin, Sussex County, New Jersey, USA

ⓘ Sonolite

Formula: Mn2+9(SiO4)4(OH)2

ⓘ Spessartine

Formula: Mn2+3Al2(SiO4)3

ⓘ Sphalerite

Formula: ZnS

Localities: Reported from at least 10 localities in this region.

Description: Occurs in cavities in the Buckwheat Dolomite.

ⓘ Sphalerite var. Cleiophane (FRL)

Formula: ZnS

ⓘ Spinel

Formula: MgAl2O4

Localities: Reported from at least 7 localities in this region.

ⓘ 'Stilbite Subgroup'

Formula: M6-7[Al8-9Si27-28O72] · nH2O

Localities:

Franklin, Sussex County, New Jersey, USA
Buckwheat dump mineral collecting site, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Balls Hill Iron Mines, Franklin, Sussex County, New Jersey, USA

ⓘ Stilpnomelane

Formula: (K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O

Localities:

Trotter Mine, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Franklin, Sussex County, New Jersey, USA
Franklin Mine, Franklin, Sussex County, New Jersey, USA
Buckwheat dump mineral collecting site, Franklin Mine, Franklin, Sussex County, New Jersey, USA ? (more information)
Taylor Road dumps, Franklin Mine, Franklin, Sussex County, New Jersey, USA ? (more information)

ⓘ Stilpnomelane var. Ferristilpnomelane

Formula: K(Fe3+,Mg,Fe2+)8(Si,Al)12(O,OH)27

ⓘ Stilpnomelane var. Ferrostilpnomelane

Formula: (K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O

ⓘ Strontianite

Formula: SrCO3

ⓘ Sussexite (TL)

Formula: Mn2+BO2(OH)

Localities:

Trotter Mine, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Hamburg Mine, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Franklin Mine, Franklin, Sussex County, New Jersey, USA
Taylor Mine, Franklin Mine, Franklin, Sussex County, New Jersey, USA

Habit: Fibrous

Colour: White, lilac

Description: Occurs as a secondary mineral in ore within the Franklin orebody.

ⓘ Svabite

Formula: Ca5(AsO4)3F

Localities:

Franklin Mine, Franklin, Sussex County, New Jersey, USA
Buckwheat dump mineral collecting site, Franklin Mine, Franklin, Sussex County, New Jersey, USA

~~Mill site dump, Franklin Mine, Franklin, Sussex County, New Jersey, USA~~

(more information)

Description: The report of "svabite" by Charles Palache in Professional Paper 180 of the U. S. Geological survey was probably in error given its imprecision. Many subsequent Franklin specimens were labeled "svabite" in the succeeding half century. In 2012, specimens of arsenic-bearing apatite from the Franklin Mining District were chemically and spectrographically analyzed, using quantitativel techniques and some specimens were proven to be svabite. So far the only known verified svabite specimens from the district are the handful chemically analyzed by the Crimmins (2012)study. Newly labeled svabite specimens should be accompanied with documents suitable high F values to validate the identification.

ⓘ Synchysite-(Ce)

Formula: CaCe(CO3)2F

Localities:

Buckwheat pit, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Buckwheat dump mineral collecting site, Franklin Mine, Franklin, Sussex County, New Jersey, USA

Description: Occurs as small crystals in cavities in the Buckwheat Dolomite. Discovered by G. Bearss in material collected by Steven Kiss on the Buckwheat dump.

ⓘ Szaibélyite

Formula: MgBO2(OH)

ⓘ Talc

Formula: Mg3Si4O10(OH)2

Localities:

Franklin Quarry, Franklin Marble, Franklin, Sussex County, New Jersey, USA
Buckwheat pit, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Franklin Mine, Franklin, Sussex County, New Jersey, USA
Buckwheat dump mineral collecting site, Franklin Mine, Franklin, Sussex County, New Jersey, USA

ⓘ 'Tennantite Subgroup'

Formula: Cu6(Cu4C2+2)As4S12S

ⓘ Tennantite-(Zn)

Formula: Cu6(Cu4Zn2)As4S12S

ⓘ Tenorite

Formula: CuO

ⓘ Tephroite

Formula: Mn2+2SiO4

Localities:

Franklin Mine, Franklin, Sussex County, New Jersey, USA
Buckwheat pit, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Mill site dump, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Buckwheat dump mineral collecting site, Franklin Mine, Franklin, Sussex County, New Jersey, USA

ⓘ Thomsonite-Ca

Formula: NaCa2[Al5Si5O20] · 6H2O

ⓘ Thorite

Formula: Th(SiO4)

Localities:

Buckwheat pit, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Trotter Mine, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Double Rock pegmatite, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Buckwheat dump mineral collecting site, Franklin Mine, Franklin, Sussex County, New Jersey, USA

Colour: Yellow to orange-yellow.

Fluorescence: None.

Description: Thorite occurs in microcline & quartz-rich pegmatites. In recent years it was ID'd on such pegmatitic material in the thorutite assemblage.

ⓘ Thorite var. Orangite

Formula: Th(SiO4)

ⓘ Thorutite

Formula: (Th,U,Ca)Ti2(O,OH)6

Localities:

Buckwheat pit, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Buckwheat dump mineral collecting site, Franklin Mine, Franklin, Sussex County, New Jersey, USA

Habit: Black elongated rods with a characteristic re-entry angle grove along their length.

Colour: Black

Fluorescence: Not fluorescent

Description: Occurs as small (<2 mm), dark, prismatic crystals associated with thorite in microcline-rich pegmatite. Limited number of specimens (est. 15).

ⓘ Tilasite

Formula: CaMg(AsO4)F

ⓘ '~~Tirodite'~~

Description: The mineral reported as tirodite by Klein and Ito (1968), Hawthorne and Grundy (1973, 1977) and Dunn(1995) corresponds to a Zn-rich Mangano-cummingtonite.

ⓘ Titanite

Formula: CaTi(SiO4)O

Localities: Reported from at least 9 localities in this region.

ⓘ Todorokite

Formula: (Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 · 3-4H2O

Description: One, or only a few, specimens from the Franklin mine - one confirmed ex. Cianciulli coll., now in Lemanski coll.

ⓘ 'Tourmaline'

Formula: A D3G6 (T6O18)(BO3)3X3Z

ⓘ Tremolite

Formula: ◻Ca2Mg5(Si8O22)(OH)2

Localities:

ⓘ Turneaureite (TL)

Formula: Ca5(AsO4)3Cl

Type Locality:

Description: The Franklin mine is one of three co-type localities.

References:

Dunn, P. J., Petersen, E. U., Peacor, D. R. (1985) Turneaureite, a new member of the apatite group from Franklin, New Jersey, Balmat, New York and Långban, Sweden. The Canadian Mineralogist, 23 (2) 251-254

ⓘ 'UM1985-26-SiO:CaMgPbZn (Also known as Mineral A)'

Formula: Pb2Zn5Ca4Mg2Si7O27

ⓘ 'UM1986-10-CO:ClHMgMnZn (also called Mineral F, Dunn, 1995)' (FRL)

Formula: Mg5(Zn,Mn)3(CO3)2(OH,Cl)12 · H2O

Type Locality:

ⓘ 'UM1986-23-O:BaMnU'

Formula: Ba-Mn-U-O

ⓘ Umangite

Formula: Cu3Se2

ⓘ Uraninite

Formula: UO2

Localities:

Buckwheat pit, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Trotter Mine, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Buckwheat dump mineral collecting site, Franklin Mine, Franklin, Sussex County, New Jersey, USA

Description: Uraninite occurs as black massive material in microcline-rich pegmatitic intrusives.

ⓘ Uvite

Formula: CaMg3(Al5Mg)(Si6O18)(BO3)3(OH)3(OH)

ⓘ Vesuvianite

Formula: Ca19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9

Localities:

Franklin Mine, Franklin, Sussex County, New Jersey, USA
Mill site dump, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Franklin, Sussex County, New Jersey, USA

Description: Occurs as a red-brown berylian variety, as a component of the mixture pseudomorphic after hendricksite ("caswellite") and as both green and blue cyprine.

ⓘ Vesuvianite var. Beryllium-bearing Vesuvianite (FRL)

Formula: (Ca,Na,◻)19(Al,Mg,Fe3+)13(◻,B,Al,Fe3+,Be)5(Si2O7)4(SiO4)10(OH,F,O)10

Type Locality:

ⓘ Vesuvianite var. Manganese-bearing Vesuvianite ?

Formula: Ca19(Fe3+,Mn2+,Mn3+)Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10](O,OH)(OH)9

Description: No data available

ⓘ 'Vredenburgite'

ⓘ Wallkilldellite

Formula: Ca2Mn2+3(AsO4)2(OH)4 · 9H2O

Localities:

Franklin, Sussex County, New Jersey, USA
Franklin Mine, Franklin, Sussex County, New Jersey, USA
Buckwheat dump mineral collecting site, Franklin Mine, Franklin, Sussex County, New Jersey, USA

Description: Verified by Heixong Yanf at RRUFF using Raman spectroscopy and EDS

✪ Wawayandaite (TL)

Formula: Ca6Mn2BBe9Si6O23(OH,Cl)15

Type Locality:

Habit: Thin plates

Colour: Pearly white to colourless

References:

Dunn, Pete J., Peacor, Donald R., Grice, Joel D., Wicks, Frederick J., Chi, Peter H. (1990) Wawayandaite, a new calcium manganese beryllium boron silicate from Franklin, New Jersey. American Mineralogist, 75 (3-4) 405-408

ⓘ Willemite

Formula: Zn2SiO4

Localities: Reported from at least 10 localities in this region.

Colour: Colorless, gray, apple-green, burgundy-red, black, dark gray, yellow

Fluorescence: Bright green (SW); dull green (LW)

Description: Occurs abundantly throughout the locality within the Franklin orebody.

ⓘ Willemite var. Troostite

Formula: (Zn,Mn)2SiO4

ⓘ Winchite

Formula: ◻{CaNa}{Mg4Al}(Si8O22)(OH)2

Description: Winchite from the Buckwheat Dump collecting site was originally labeled "tremolite", although it had a purple gray color. RDS, XRD, and single crystal study demonstartes that it is a manganoan zincian winchite.

ⓘ Wittichenite

Formula: Cu3BiS3

ⓘ Wollastonite

Formula: Ca3(Si3O9)

ⓘ Xonotlite

Formula: Ca6(Si6O17)(OH)2

Localities:

Franklin Mine, Franklin, Sussex County, New Jersey, USA
Parker shaft, Franklin Mine, Franklin, Sussex County, New Jersey, USA
Mill site dump, Franklin Mine, Franklin, Sussex County, New Jersey, USA

✪ Yeatmanite (TL)

Formula: Zn6Mn2+9Sb5+2(SiO4)4O12

Type Locality:

Description: Yeatmanite was found on a single specimen associated with johnbaumite, sarkinite and willemite in lean ore from the Buckwheat dump.