Franklin Mine, 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
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

ⓘ Analcime

Formula: Na(AlSi2O6) · H2O

Localities:

Buckwheat pit, Franklin Mine, 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 8 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.

ⓘ Antigorite

Formula: Mg3(Si2O5)(OH)4

ⓘ 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 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
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:

ⓘ Atacamite

Formula: Cu2(OH)3Cl

ⓘ Augite

Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6

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

ⓘ Aurichalcite

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

ⓘ 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
Buckwheat dump mineral collecting site, 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

ⓘ Azurite

Formula: Cu3(CO3)2(OH)2

✪ 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:

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

Description: Occurs in ore within 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

ⓘ 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:

ⓘ Bultfonteinite

Formula: Ca2(HSiO4)F · H2O

ⓘ Bustamite (TL)

Formula: CaMn2+(Si2O6)

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
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 9 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

ⓘ Celsian

Formula: Ba(Al2Si2O8)

Localities:

Parker shaft, Franklin Mine, 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

ⓘ Cerussite

Formula: PbCO3

ⓘ Chalcocite

Formula: Cu2S

ⓘ Chalcopyrite

Formula: CuFeS2

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

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

ⓘ Chrysocolla

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

ⓘ Chrysotile

Formula: Mg3(Si2O5)(OH)4

Habit: fibrous

Colour: white

Description: Fibrous material associated with lizardite in a small shear zone in lean ore.

✪ 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:

ⓘ '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:

ⓘ 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.

ⓘ 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:

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

ⓘ Datolite var. Bakerite

Formula: Ca4(H5B5Si3O20)

ⓘ Datolite var. Botryolite

ⓘ Diopside

Formula: CaMgSi2O6

Localities:

Mill site dump, 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

ⓘ 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:

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

ⓘ Domeykite

Formula: Cu3As

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

ⓘ Edenite

Formula: NaCa2Mg5(Si7Al)O22(OH)2

ⓘ Epidote

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

Localities:

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

ⓘ 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

ⓘ 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.

ⓘ Fluorapatite

Formula: Ca5(PO4)3F

Localities:

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

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

ⓘ Fluorapophyllite-(K)

Formula: KCa4(Si8O20)(F,OH) · 8H2O

Localities:

Palmer shaft, Franklin Mine, 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

ⓘ ~~Fluorapophyllite-(Na)~~

Formula: NaCa4(Si8O20)F · 8H2O

ⓘ ~~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 6 localities in this region.

Description: Occurs in ore within the Franklin orebody and within the unique nickel-cobalt-arsenic assemblage.

ⓘ Fluorite var. Chlorophane

Formula: CaF2

✪ Fluor-uvite (TL)

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

Type Locality:

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'

✪ Franklinfurnaceite (TL)

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

Type Locality:

ⓘ Franklinite (TL)

Formula: Zn2+Fe3+2O4

Localities: Reported from at least 9 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:

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
Taylor Mine, 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

Habit: Rare cubic habit in adjacent tunnel.

Colour: Dark green.

ⓘ Galena

Formula: PbS

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

ⓘ Ganomalite

Formula: Pb9Ca5Mn(Si2O7)4(SiO4)O

ⓘ Ganophyllite

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

ⓘ 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:

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
Taylor Road dumps, Franklin Mine, Franklin, Sussex County, New Jersey, USA

ⓘ 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:

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

ⓘ Greenockite

Formula: CdS

References:

ⓘ Grossular

Formula: Ca3Al2(SiO4)3

Localities:

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

ⓘ 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:

Palmer shaft, Franklin Mine, 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
Franklin Mine, Franklin, Sussex County, New Jersey, USA

ⓘ 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:

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

ⓘ Hemimorphite

Formula: Zn4Si2O7(OH)2 · H2O

Localities:

ⓘ Hendricksite (TL)

Formula: KZn3(Si3Al)O10(OH)2

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

ⓘ Hetaerolite

Formula: ZnMn2O4

ⓘ '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

Type Locality:

Description: First described from the Franklin Mine by Charles Palache (1921) American Mineralogist for Harvard University graduate, mineral collector, and benefactor Albert F. Holden.

ⓘ 'Hornblende Root Name Group'

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

ⓘ 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)

ⓘ 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:

Mill site dump, Franklin Mine, 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

ⓘ 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).

ⓘ 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:

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

ⓘ 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.

ⓘ 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:

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-hornblende

Formula: ◻Ca2(Mg4Al)(Si7Al)O22(OH)2

ⓘ Magnesio-riebeckite

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

Localities:

Trotter Mine, Franklin Mine, 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: 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 7 localities in this region.

Description: Occurs in ore within the Franklin orebody.

ⓘ Malachite

Formula: Cu2(CO3)(OH)2

Localities:

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

Trotter 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

ⓘ Marcasite

Formula: FeS2

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.

ⓘ Margarite

Formula: CaAl2(Al2Si2O10)(OH)2

ⓘ Margarosanite (TL)

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

Localities:

✪ 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:

ⓘ Microcline

Formula: K(AlSi3O8)

Localities: Reported from at least 6 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:

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

Description: Occurs in massive, dark colored calc-silicate matrix.

ⓘ 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:

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

ⓘ 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
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

ⓘ Opal

Formula: SiO2 · nH2O

ⓘ Orthoclase

Formula: K(AlSi3O8)

ⓘ Pararammelsbergite

Formula: NiAs2

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

References:

ⓘ 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:

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

ⓘ '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 6 localities in this region.

ⓘ Pyrobelonite

Formula: PbMn2+(VO4)(OH)

ⓘ 'Pyrochlore Group'

Formula: A2Nb2(O,OH)6Z

ⓘ Pyrochroite

Formula: Mn(OH)2

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

✪ 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:

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

ⓘ Quartz

Formula: SiO2

Localities:

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

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

ⓘ 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

ⓘ Siderite

Formula: FeCO3

ⓘ Silver

Formula: Ag

ⓘ 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 7 localities in this region.

Description: Occurs in ore within the Franklin orebody.

ⓘ Sphalerite var. Cleiophane

Formula: ZnS

Description: Occurs in ore within the Franklin orebody.

ⓘ Spinel

Formula: MgAl2O4

Localities:

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

ⓘ 'Stilbite Subgroup'

Formula: M6-7[Al8-9Si27-28O72] · nH2O

References:

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

References:

ⓘ 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 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

ⓘ 'Tennantite Subgroup'

Formula: Cu6(Cu4C2+2)As4S12S

ⓘ Tenorite

Formula: CuO

ⓘ Tephroite

Formula: Mn2+2SiO4

Localities:

ⓘ 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

ⓘ Titanite

Formula: CaTi(SiO4)O

Localities:

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

Description: Occurs in microcline-rich, intrusive pegamtitic bodies.

ⓘ 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.

ⓘ Tremolite

Formula: ◻Ca2Mg5(Si8O22)(OH)2

ⓘ 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

ⓘ '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

References:

in: Hawthorne, F.C., Bladh, K.W., Burke, E.A.J., Grew, E.S., Langley, R.H., Puziewicz, J., Roberts, A.C., Schedler, R.A., Shigley, J.E., Vanko, D.A. (1987): New mineral Names. American Mineralogist: 72: 228

ⓘ 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.

ⓘ Vesuvianite

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

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. Manganese-bearing Vesuvianite ?

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

Description: No data available

ⓘ Wallkilldellite

Formula: Ca2Mn2+3(AsO4)2(OH)4 · 9H2O

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