Okanogan County, Washington, USA (original) (raw)

Acanthite

Formula: Ag2S

Localities: Reported from at least 19 localities in this region.

Description: small crystals in quartz vugs

Actinolite

Formula: ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2

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

Aegirine

Formula: NaFe3+Si2O6

Localities:

Washington Pass, Golden Horn Batholith, Okanogan County, Washington, USA
Ellenham Mtn area, Nighthawk Mining District, Okanogan County, Washington, USA
Kruger Mountain, Oroville Mining District, Okanogan County, Washington, USA

Habit: needles and bluntly terminated prisms

Colour: green to black

Aenigmatite

Formula: Na4[Fe2+10Ti2]O4[Si12O36]

Habit: tiny grains

Description: Occurs in the satellite dikes derived from the Golden Horn Granite

Agardite-(Y)

Formula: YCu6(AsO4)3(OH)6 · 3H2O

Habit: asicular crystals

Colour: greenish blue

Description: only a few specimens have been found. They are from a small pegmatite and formed from secondary sulfide alteration.

Albite

Formula: Na(AlSi3O8)

Localities:

Washington Pass, Golden Horn Batholith, Okanogan County, Washington, USA
Topaz Mountain, Chewuch Mining District, Okanogan County, Washington, USA
Windy Peak, Chewuch Mining District, Okanogan County, Washington, USA
Buckhorn Mine, Southwest Zone and Gold Bowl (Crown Jewel) Zone, Buckhorn Mountain, Myer Creek Mining District, Okanogan County, Washington, USA
Kelsey Prospect, Oroville Mining District, Okanogan County, Washington, USA

Habit: tabular euhedral twinned crystals to 1" in diameter

Colour: pinkish, white

Allanite-(Ce)

Formula: (CaCe)(AlAlFe2+)O[Si2O7][SiO4](OH)

Habit: square tabular crystals

Colour: black

'Allanite Group'

Formula: (A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)

References:

Markus B. Raschke, Evan J. D. Anderson, Alexandra Skewes, Julien Allaz, Henrik Friis, Joseph Smyth, Charles Stern, Philip M. Persson, Rhiana Henry, Katharina Pfaff, Rudy Tschernich, and Randy Becker (2016) Unusual REE and rare element minerals from pegmatites and alkaline granites: thalenite and brannockite from the Golden Horn Batholith, Washington, and South Platte Pegmatite district, Colorado (USA). Second Eugene E. Foord Pegmatite Symposium July 15-19, 2016 Colorado School of Mines campus, Golden, Colorado

Almandine

Formula: Fe2+3Al2(SiO4)3

Colour: red

Anatase

Formula: TiO2

Colour: dark grey to black

Description: Found in one area

Andradite

Formula: Ca3Fe3+2(SiO4)3

Localities:

Dutch John Prospect, Methow Mining District, Okanogan County, Washington, USA
Buckhorn Mine, Southwest Zone and Gold Bowl (Crown Jewel) Zone, Buckhorn Mountain, Myer Creek Mining District, Okanogan County, Washington, USA
Ellenham Mtn area, Nighthawk Mining District, Okanogan County, Washington, USA
Kruger Mountain, Oroville Mining District, Okanogan County, Washington, USA

Habit: dodecahedral crystals to 7/8" in diameter

Colour: Red Brown to Olive Green

Andradite var. Melanite

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

Habit: crystals to 4mm

Colour: black

Anglesite

Formula: PbSO4

Anhydrite

Formula: CaSO4

Ankerite

Formula: Ca(Fe2+,Mg)(CO3)2

Annabergite

Formula: Ni3(AsO4)2 · 8H2O

Habit: crusts

Colour: bright green

Annite

Formula: KFe2+3(AlSi3O10)(OH)2

Antigorite

Formula: Mg3(Si2O5)(OH)4

Localities:

Antimony Bell Mine, Gold Creek, Methow Mining District, Okanogan County, Washington, USA
Johnson Creek Mine, Conconully Mining District, Okanogan County, Washington, USA
Stepstone Prospect, Nespelem Mining District, Okanogan County, Washington, USA

'Apatite'

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

Localities:

Radar Mountain Roadcuts, Okanogan County, Washington, USA
Crawfish Lake Area, Okanogan County, Washington, USA
Washington Pass, Golden Horn Batholith, Okanogan County, Washington, USA

Arfvedsonite

Formula: [Na][Na2][Fe2+4Fe3+]Si8O22(OH)2

Habit: large prisms to 6cm; rock forming masses

Colour: Black

Arsenopyrite

Formula: FeAsS

Localities: Reported from at least 26 localities in this region.

Astrophyllite

Formula: K2NaFe2+7Ti2Si8O26(OH)4F

Habit: hairlike groups, broad single blades, and radial groups to 1.5" long

Colour: Bronze

Augite

Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6

Azurite

Formula: Cu3(CO3)2(OH)2

Localities: Reported from at least 17 localities in this region.

Habit: crusts

Colour: bright blue

Baryte

Formula: BaSO4

'Bastnäsite'

Formula: (Ce/Nd/Y/REE)(CO3)F

References:

Markus B. Raschke, Evan J. D. Anderson, Alexandra Skewes, Julien Allaz, Henrik Friis, Joseph Smyth, Charles Stern, Philip M. Persson, Rhiana Henry, Katharina Pfaff, Rudy Tschernich, and Randy Becker (2016) Unusual REE and rare element minerals from pegmatites and alkaline granites: thalenite and brannockite from the Golden Horn Batholith, Washington, and South Platte Pegmatite district, Colorado (USA). Second Eugene E. Foord Pegmatite Symposium July 15-19, 2016 Colorado School of Mines campus, Golden, Colorado

Bastnäsite-(Ce)

Formula: Ce(CO3)F

Habit: hexagonal tablets and prisms

Colour: pink, red, reddish-orange

Description: crystals are uncommon and often are Bastnäsite-(Ce)/Synchysite intergrowths

'Bastnäsite Group'

Formula: M(CO3)X where M = REE, Th and X = F or OH

Beryl ?

Formula: Be3Al2(Si6O18)

Colour: Varity aquamarine

Description: 2 crystals reported to have been found

'Biotite'

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

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

'Biotite var. Oxybiotite'

Bismuth

Formula: Bi

Bismuthinite

Formula: Bi2S3

Bornite

Formula: Cu5FeS4

Localities: Reported from at least 20 localities in this region.

Boulangerite

Formula: Pb5Sb4S11

Brannockite

Formula: K◻2Sn2Li3[Si12O30]

Description: Zr-, Ti-, Hf-, Fe+Al- and Na- substitution.

References:

Markus B. Raschke, Evan J. D. Anderson, Alexandra Skewes, Julien Allaz, Henrik Friis, Joseph Smyth, Charles Stern, Philip M. Persson, Rhiana Henry, Katharina Pfaff, Rudy Tschernich, and Randy Becker (2016) Unusual REE and rare element minerals from pegmatites and alkaline granites: thalenite and brannockite from the Golden Horn Batholith, Washington, and South Platte Pegmatite district, Colorado (USA). Second Eugene E. Foord Pegmatite Symposium July 15-19, 2016 Colorado School of Mines campus, Golden, Colorado

Bromargyrite

Formula: AgBr

Burkeite

Formula: Na6(CO3)(SO4)2

Calaverite

Formula: AuTe2

Calciocatapleiite

Formula: CaZr(Si3O9) · 2H2O

Habit: thin Disc like crystals to 2mm across

Colour: milky white

Calciohilairite (TL)

Formula: CaZr[SiO3]3 · 3H2O

Habit: blocky teragonal prisms

Colour: bluish to chalky white

Calcite

Formula: CaCO3

Localities: Reported from at least 45 localities in this region.

Habit: scalenohedral crystals, hexagonal prisms

Colour: colorless to white

Cerussite

Formula: PbCO3

Cervantite

Formula: Sb3+Sb5+O4

Description: Bart Cannon ID of specimens field collected by Elwin Magill around 1965.

Chabazite-Ca

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

Chalcanthite

Formula: CuSO4 · 5H2O

Habit: large crusts

Colour: pale blue

Chalcocite

Formula: Cu2S

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

Chalcopyrite

Formula: CuFeS2

Localities: Reported from at least 150 localities in this region.

Habit: small sharp crystals

Chamosite

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

Habit: druses and hexagonal prisms

Colour: green to golden Brown

Chevkinite-(Ce)

Formula: Ce4(Ti,Fe2+,Fe3+)5O8(Si2O7)2

Habit: rounded to flattened prisms

Colour: black

Description: this list encompasses several different environments of the Golden Horn Batholith at Washington Pass

'Chevkinite Group'

References:

Markus B. Raschke, Evan J. D. Anderson, Alexandra Skewes, Julien Allaz, Henrik Friis, Joseph Smyth, Charles Stern, Philip M. Persson, Rhiana Henry, Katharina Pfaff, Rudy Tschernich, and Randy Becker (2016) Unusual REE and rare element minerals from pegmatites and alkaline granites: thalenite and brannockite from the Golden Horn Batholith, Washington, and South Platte Pegmatite district, Colorado (USA). Second Eugene E. Foord Pegmatite Symposium July 15-19, 2016 Colorado School of Mines campus, Golden, Colorado

Chlorargyrite

Formula: AgCl

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

'Chlorite Group'

Localities:

Copper World Extension Mine, Palmer Mountain Mining District, Okanogan County, Washington, USA
Kelsey Prospect, Oroville Mining District, Okanogan County, Washington, USA
Monterey Prospect, Buckhorn Mountain, Myer Creek Mining District, Okanogan County, Washington, USA
Washington Pass, Golden Horn Batholith, Okanogan County, Washington, USA
Mazama Porphyry, Mazama Mining District, Okanogan County, Washington, USA

Chondrodite

Formula: Mg5(SiO4)2F2

Habit: anhedral grains

Chromite

Formula: Fe2+Cr3+2O4

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

Chrysocolla

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

Localities:

Washington Pass, Golden Horn Batholith, Okanogan County, Washington, USA
Kelsey Prospect, Oroville Mining District, Okanogan County, Washington, USA
Jones Prospect, Chewuch Mining District, Okanogan County, Washington, USA
Ohio Prospect, Oroville Mining District, Okanogan County, Washington, USA
Mazama Porphyry, Mazama Mining District, Okanogan County, Washington, USA

Description: this list encompasses several different environments of the Golden Horn Batholith at Washington Pass

Cinnabar

Formula: HgS

Clinochlore ?

Formula: Mg5Al(AlSi3O10)(OH)8

Clinochlore var. Chromium-bearing Clinochlore ?

Formula: Mg5(Al,Cr)2Si3O10(OH)8

Clinofergusonite-(Y)

Formula: YNbO4

Habit: blocky to prismatic crystals

Colour: tan to brown

Description: Found in the border granite of Liberty Bell

'Clinoptilolite Subgroup'

Formula: M3-6(Si30Al6)O72 · 20H2O

Cobaltite

Formula: CoAsS

Copper

Formula: Cu

Localities:

Moncosilgo Prospect, Oroville Mining District, Okanogan County, Washington, USA
Alder Mine, Twisp Mining District, Okanogan County, Washington, USA
Mazama Porphyry, Mazama Mining District, Okanogan County, Washington, USA

Coquandite (TL)

Formula: Sb6+xO8+x(SO4)(OH)x(H2O)1- x (x = 0.3)

Type Locality:

References:

Sabelli, C., Orlandi, P., Vezzalini, G. (1992) Coquandite, Sb6O8(SO4)·H2O, a new mineral from Pereta, Tuscany, Italy, and two other localities. Mineralogical Magazine: 56: 599-603.

Cordierite

Formula: (Mg,Fe)2Al3(AlSi5O18)

Habit: knots of anhedral cordierite

Description: in schist

Corundum

Formula: Al2O3

Corundum var. Ruby

Formula: Al2O3

Corundum var. Sapphire

Formula: Al2O3

Covellite

Formula: CuS

Cuprite

Formula: Cu2O

Localities:

Moncosilgo Prospect, Oroville Mining District, Okanogan County, Washington, USA
Ruby Mine, Nighthawk Mining District, Okanogan County, Washington, USA
Last Chance Mine, Ruby Hill, Conconully Mining District, Okanogan County, Washington, USA

Diopside

Formula: CaMgSi2O6

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

Dolomite

Formula: CaMg(CO3)2

Habit: granular masses

Colour: white to pink

Elpidite

Formula: Na2ZrSi6O15 · 3H2O

Elpidite var. Calcium-bearing Elpidite

Formula: (Na,Ca)2ZrSi6O15 · 3H2O

Epidote

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

Localities: Reported from at least 28 localities in this region.

Description: this list encompasses several different environments of the Golden Horn Batholith at Washington Pass

Epsomite

Formula: MgSO4 · 7H2O

Localities:

Kruger Mountain, Oroville Mining District, Okanogan County, Washington, USA
Poison Lake, Okanogan County, Washington, USA
Bitter Lake, Oroville Mining District, Okanogan County, Washington, USA
Okanogan County, Washington, USA
Wannacut Lake, Wannacut Lake Mining District, Okanogan County, Washington, USA

Erythrite

Formula: Co3(AsO4)2 · 8H2O

Localities:

Stepstone Prospect, Nespelem Mining District, Okanogan County, Washington, USA
Buckhorn Mine, Southwest Zone and Gold Bowl (Crown Jewel) Zone, Buckhorn Mountain, Myer Creek Mining District, Okanogan County, Washington, USA

Habit: crusts

Colour: pink

Euxenite-(Y)

Formula: (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6

Habit: crude prisms to 2mm

Colour: Brownish yellow

Description: These crystals contain fluorine and are not metamict.

Fayalite

Formula: Fe2+2SiO4

'Fayalite-Forsterite Series'

'Feldspar Group'

'Fergusonite'

References:

Markus B. Raschke, Evan J. D. Anderson, Alexandra Skewes, Julien Allaz, Henrik Friis, Joseph Smyth, Charles Stern, Philip M. Persson, Rhiana Henry, Katharina Pfaff, Rudy Tschernich, and Randy Becker (2016) Unusual REE and rare element minerals from pegmatites and alkaline granites: thalenite and brannockite from the Golden Horn Batholith, Washington, and South Platte Pegmatite district, Colorado (USA). Second Eugene E. Foord Pegmatite Symposium July 15-19, 2016 Colorado School of Mines campus, Golden, Colorado

Ferrimolybdite

Formula: Fe2(MoO4)3 · nH2O

Ferro-hornblende

Formula: ◻Ca2(Fe2+4Al)(Si7Al)O22(OH)2

Ferro-richterite

Formula: {Na}{CaNa}{Fe2+5}(Si8O22)(OH)2

Fluorite

Formula: CaF2

Localities: Reported from at least 14 localities in this region.

Habit: massive; granular; octahedral crystals to 1mm

Colour: purple, yellowish purple, Pink

Description: purple octehedra to 1mm, crudely crystalized pink specimens are found in the biotite granite

'Fluorplumbopyrochlore'

Formula: (Pb,Y,Th,U,Na,Ca)2-x(Nb,Ti)2O6F

'Gadolinite'

Gadolinite-(Ce)

Formula: (Ce,La,Nd,Y)2Fe2+Be2Si2O10

References:

Metamict crystal identified by XRD after annealing at 700° for 48 hours by John Attard, 12Dec08. Results indicated a distinct match to type material from the Oslo, Norway area as reported by Segalstad and Larsen, American Mineralogist, V 63, 1973, "Gadolinite-(Ce) from Skien, southwestern Oslo region, Norway." Over forty EDS spectra accomplished by Saul Krotki, with John Attard and Bart Cannon, confirm the cerium dominant species differing from previously reported yttrium dominant species from WA Pass. Here only the outermost skins of the crystals are yttrium dominant.

Gadolinite-(Y)

Formula: Y2Fe2+Be2Si2O10

Habit: squarish and diamond shaped prisms

Colour: clear to white

'Gagarinite'

References:

Markus B. Raschke, Evan J. D. Anderson, Alexandra Skewes, Julien Allaz, Henrik Friis, Joseph Smyth, Charles Stern, Philip M. Persson, Rhiana Henry, Katharina Pfaff, Rudy Tschernich, and Randy Becker (2016) Unusual REE and rare element minerals from pegmatites and alkaline granites: thalenite and brannockite from the Golden Horn Batholith, Washington, and South Platte Pegmatite district, Colorado (USA). Second Eugene E. Foord Pegmatite Symposium July 15-19, 2016 Colorado School of Mines campus, Golden, Colorado

Gagarinite-(Y)

Formula: NaCaYF6

Habit: elongated Prisms

Colour: colorless, white to pale pink

Galena

Formula: PbS

Localities: Reported from at least 93 localities in this region.

Galena var. Silver-bearing Galena

Formula: PbS with Ag

Galenobismutite

Formula: PbBi2S4

'Garnet Group'

Formula: X3Z2(SiO4)3

Localities: Reported from at least 17 localities in this region.

'Garnierite'

Gaylussite

Formula: Na2Ca(CO3)2 · 5H2O

Genthelvite

Formula: Be3Zn4(SiO4)3S

Glaucodot

Formula: (Co0.50Fe0.50)AsS

Goethite

Formula: α-Fe3+O(OH)

Habit: pseudomorphs

Colour: brown to black

Description: Commonly found as pseudomorphs after arfedsonite and siderite. One Cavity that produced pseudomorphs after Zektzerite has been found.

Gold

Formula: Au

Localities: Reported from at least 61 localities in this region.

Graphite

Formula: C

Localities:

American Graphite Mine, Okanogan County, Washington, USA
Tonasket Graphite Occurrence, Oroville Mining District, Okanogan County, Washington, USA
Wyandotte Mine, Nighthawk Mining District, Okanogan County, Washington, USA ? (more information)

Grossular

Formula: Ca3Al2(SiO4)3

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

Gypsum

Formula: CaSO4 · 2H2O

Localities:

Bitter Lake, Oroville Mining District, Okanogan County, Washington, USA
Poison Lake, Okanogan County, Washington, USA
Lenton Flat, Nighthawk Mining District, Okanogan County, Washington, USA
Okanogan County, Washington, USA
Minnie Mine, Methow Mining District, Okanogan County, Washington, USA

Gypsum var. Selenite

Formula: CaSO4 · 2H2O

Halite

Formula: NaCl

Hastingsite

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

Localities:

Ellenham Mtn area, Nighthawk Mining District, Okanogan County, Washington, USA
Kruger Mountain, Oroville Mining District, Okanogan County, Washington, USA
Salmon Creek Area, Conconully Mining District, Okanogan County, Washington, USA
Washington Pass, Golden Horn Batholith, Okanogan County, Washington, USA

Hastingsite var. Alkali-ferrohastingsite

Formula: {Na}{Ca2}{Fe2+4Fe3+}(Al2Si6O22)(OH)2

Hedenbergite

Formula: CaFe2+Si2O6

Hedleyite

Formula: Bi7Te3

Hematite

Formula: Fe2O3

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

Habit: tabular hexagonal

Colour: silvery black

Hematite var. Specularite

Formula: Fe2O3

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

Hessite

Formula: Ag2Te

Hexahydrite

Formula: MgSO4 · 6H2O

'Hornblende Root Name Group'

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

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

Hübnerite

Formula: MnWO4

Hydromagnesite

Formula: Mg5(CO3)4(OH)2 · 4H2O

Ilmenite

Formula: Fe2+TiO3

Jamesonite

Formula: Pb4FeSb6S14

'Joséite'

Formula: Bi4TeS2

Kainosite-(Y)

Formula: Ca2(Y,Ce)2(Si4O12)(CO3) · H2O

Habit: prismatic crystals with wedge shaped terminations

Colour: white

Description: this list encompasses several different environments of the Golden Horn Batholith at Washington Pass

Kaolinite

Formula: Al2(Si2O5)(OH)4

'K Feldspar'

Laumontite

Formula: CaAl2Si4O12 · 4H2O

'Limonite'

Localities: Reported from at least 23 localities in this region.

Linarite

Formula: PbCu(SO4)(OH)2

Löllingite

Formula: FeAs2

Habit: blebs and crude crystals

Colour: metalic silvery white

Magnesite

Formula: MgCO3

Magnetite

Formula: Fe2+Fe3+2O4

Localities: Reported from at least 29 localities in this region.

Habit: cubes and octehedra to less then 1mm

Colour: black

Malachite

Formula: Cu2(CO3)(OH)2

Localities: Reported from at least 37 localities in this region.

Habit: asicular needles and rounded blebs

Colour: green

'Manganese Oxides'

Localities:

Home Run Prospect, Nespelem Mining District, Okanogan County, Washington, USA
Modoc Prospect, Nespelem Mining District, Okanogan County, Washington, USA
Goodenuf Prospect, Nespelem Mining District, Okanogan County, Washington, USA
Moneymaker Prospect, Park City Mining District, Okanogan County, Washington, USA
Bonanza Claim, Park City Mining District, Okanogan County, Washington, USA

Marcasite

Formula: FeS2

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

Meionite

Formula: Ca4Al6Si6O24CO3

'Mica Group'

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

Microcline

Formula: K(AlSi3O8)

Localities:

Washington Pass, Golden Horn Batholith, Okanogan County, Washington, USA
Ellenham Mtn area, Nighthawk Mining District, Okanogan County, Washington, USA
Evans Lake, Okanogan County, Washington, USA
Crawfish Lake Area, Okanogan County, Washington, USA

Habit: blocky crsytals

Colour: white to green

Mimetite

Formula: Pb5(AsO4)3Cl

Mirabilite

Formula: Na2SO4 · 10H2O

Molybdenite

Formula: MoS2

Localities: Reported from at least 34 localities in this region.

Molybdite

Formula: MoO3

Localities:

Bi-Metallic Mine, Myer Creek Mining District, Okanogan County, Washington, USA
Wasco Prospect, Park City Mining District, Okanogan County, Washington, USA
Starr Mine, Conconully Mining District, Okanogan County, Washington, USA

Monazite-(Ce)

Formula: Ce(PO4)

Habit: tabular crystals

Colour: orange to brown

Montmorillonite

Formula: (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O

Mordenite

Formula: (Na2,Ca,K2)4(Al8Si40)O96 · 28H2O

Muscovite

Formula: KAl2(AlSi3O10)(OH)2

Localities: Reported from at least 16 localities in this region.

Muscovite var. Fuchsite

Formula: K(Al,Cr)3Si3O10(OH)2

Muscovite var. Mariposite

Formula: K(Al,Cr)2(Al,Si)4O10(OH)2

Muscovite var. Phengite

Formula: KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2

Muscovite var. Sericite

Formula: KAl2(AlSi3O10)(OH)2

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

Natron

Formula: Na2CO3 · 10H2O

Nepheline

Formula: Na3K(Al4Si4O16)

Okanoganite-(Y) (TL)

Formula: (Na,Ca)3(Y,Ce)12Si6B2O27F14

Habit: tetrahedra

Colour: white to reddish orange

Omphacite

Formula: (NaaCabFe2+cMgd)(AleFe3+fFe2+gMgh)Si2O6

Opal

Formula: SiO2 · nH2O

Opal var. Hyalite

Formula: SiO2 · nH2O

Description: Thin crusts, with bright green fluorescence under SW UV, on microcline crystals.

Orthoclase

Formula: K(AlSi3O8)

Pargasite

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

Localities:

Ellenham Mtn area, Nighthawk Mining District, Okanogan County, Washington, USA
Crawfish Lake Area, Okanogan County, Washington, USA
Salmon Creek Area, Conconully Mining District, Okanogan County, Washington, USA

Pentlandite

Formula: (NixFey)Σ9S8

Petzite

Formula: Ag3AuTe2

Pharmacosiderite

Formula: KFe3+4(AsO4)3(OH)4 · 6-7H2O

Habit: crusts

Description: Found as an alteration product on lollingite

Phlogopite

Formula: KMg3(AlSi3O10)(OH)2

'Plagioclase'

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

Platinum

Formula: Pt

Polylithionite

Formula: KLi2Al(Si4O10)(F,OH)2

Habit: rounded platey crystals to crystaline aggregates.

Colour: colorless to silvery white

Powellite

Formula: Ca(MoO4)

Localities:

Bi-Metallic Mine, Myer Creek Mining District, Okanogan County, Washington, USA
Hiawatha Mine, Palmer Mountain Mining District, Okanogan County, Washington, USA
Dutch John Prospect, Methow Mining District, Okanogan County, Washington, USA

Prehnite

Formula: Ca2Al2Si3O10(OH)2

Proustite

Formula: Ag3AsS3

Pyrargyrite

Formula: Ag3SbS3

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

Pyrite

Formula: FeS2

Localities: Reported from at least 176 localities in this region.

'Pyrochlore Group'

Formula: A2Nb2(O,OH)6Z

References:

Markus B. Raschke, Evan J. D. Anderson, Alexandra Skewes, Julien Allaz, Henrik Friis, Joseph Smyth, Charles Stern, Philip M. Persson, Rhiana Henry, Katharina Pfaff, Rudy Tschernich, and Randy Becker (2016) Unusual REE and rare element minerals from pegmatites and alkaline granites: thalenite and brannockite from the Golden Horn Batholith, Washington, and South Platte Pegmatite district, Colorado (USA). Second Eugene E. Foord Pegmatite Symposium July 15-19, 2016 Colorado School of Mines campus, Golden, Colorado

'Pyrochlore Supergroup'

Formula: A2-mD2X6-wZ1-n

Pyrolusite

Formula: Mn4+O2

Pyrrhotite

Formula: Fe1-xS

Localities: Reported from at least 31 localities in this region.

Pyrrhotite var. Nickel-bearing Pyrrhotite

Formula: (Fe,Ni)7S8

Quartz

Formula: SiO2

Localities: Reported from at least 184 localities in this region.

Quartz var. Chalcedony

Formula: SiO2

Quartz var. Milky Quartz

Formula: SiO2

Quartz var. Rock Crystal

Formula: SiO2

Quartz var. Rutilated Quartz

Formula: SiO2

Quartz var. Smoky Quartz

Formula: SiO2

Rhodochrosite

Formula: MnCO3

Localities:

St. Paul Prospect, Nespelem Mining District, Okanogan County, Washington, USA
Apache Mine, Nespelem Mining District, Okanogan County, Washington, USA
Pogue Flat Mine, Okanogan County, Washington, USA
Silver Cliff Mine, Nespelem Mining District, Okanogan County, Washington, USA

Rhodonite

Formula: CaMn3Mn[Si5O15]

Riebeckite

Formula: ◻[Na2][Fe2+3Fe3+2]Si8O22(OH)2

Rutile

Formula: TiO2

Sanidine

Formula: K(AlSi3O8)

Scheelite

Formula: Ca(WO4)

Localities: Reported from at least 30 localities in this region.

Schorl

Formula: NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)

Scolecite

Formula: CaAl2Si3O10 · 3H2O

Scorodite

Formula: Fe3+AsO4 · 2H2O

Habit: crusts

Description: Found as crusts on altered lollingite crystals

'Serpentine Subgroup'

Formula: D3[Si2O5](OH)4

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

Siderite

Formula: FeCO3

Habit: rhombohedral

Colour: honey to red brown

Silver

Formula: Ag

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

Sogdianite

Formula: K◻2Zr2Li3[Si12O30]

Habit: massive

Colour: purple-pink

Description: intergrowths with zektzeite

Sphalerite

Formula: ZnS

Localities: Reported from at least 73 localities in this region.

Sphalerite var. Marmatite

Formula: (Zn,Fe)S

Spinel

Formula: MgAl2O4

Staurolite

Formula: Fe2+2Al9Si4O23(OH)

Stephanite

Formula: Ag5SbS4

Localities: Reported from at least 14 localities in this region.

'Stibiconite'

Formula: Sb3+Sb5+2O6(OH)

Localities:

Lucky Knock Mine, Okanogan County, Washington, USA
Antimony Bell Mine, Gold Creek, Methow Mining District, Okanogan County, Washington, USA
Bales Mine, Methow Mining District, Okanogan County, Washington, USA

Stibnite

Formula: Sb2S3

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

'Stilbite Subgroup'

Formula: M6-7[Al8-9Si27-28O72] · nH2O

Stromeyerite

Formula: AgCuS

Localities:

Nevada Mine, Ruby Hill, Conconully Mining District, Okanogan County, Washington, USA
Silver Bluff Mine, Conconully Mining District, Okanogan County, Washington, USA
Silver Bell Mine, Wauconda Mining District, Okanogan County, Washington, USA

Stützite ?

Formula: Ag5-xTe3, x = 0.24-0.36

Sulphur

Formula: S8

Localities:

Lucky Knock Mine, Okanogan County, Washington, USA
Minnie Mine, Methow Mining District, Okanogan County, Washington, USA
Washington Pass, Golden Horn Batholith, Okanogan County, Washington, USA

Sylvanite ?

Formula: AgAuTe4

'Synchysite'

Formula: Ca(Ce/Nd/Y/REE)(CO3)2F

References:

Markus B. Raschke, Evan J. D. Anderson, Alexandra Skewes, Julien Allaz, Henrik Friis, Joseph Smyth, Charles Stern, Philip M. Persson, Rhiana Henry, Katharina Pfaff, Rudy Tschernich, and Randy Becker (2016) Unusual REE and rare element minerals from pegmatites and alkaline granites: thalenite and brannockite from the Golden Horn Batholith, Washington, and South Platte Pegmatite district, Colorado (USA). Second Eugene E. Foord Pegmatite Symposium July 15-19, 2016 Colorado School of Mines campus, Golden, Colorado

Synchysite-(Ce)

Formula: CaCe(CO3)2F

'Synchysite Group'

Synchysite-(Y)

Formula: CaY(CO3)2F

Talc

Formula: Mg3Si4O10(OH)2

Localities:

Mount Kobau Area, Okanogan County, Washington, USA
Johnson Creek Mine, Conconully Mining District, Okanogan County, Washington, USA
Eureka Prospect, Park City Mining District, Okanogan County, Washington, USA

'Tetrahedrite Subgroup'

Formula: Cu6(Cu4C2+2)Sb4S12S

Localities: Reported from at least 29 localities in this region.

Thalénite-(Y)

Formula: Y3Si3O10F

References:

Markus B. Raschke, Evan J. D. Anderson, Alexandra Skewes, Julien Allaz, Henrik Friis, Joseph Smyth, Charles Stern, Philip M. Persson, Rhiana Henry, Katharina Pfaff, Rudy Tschernich, and Randy Becker (2016) Unusual REE and rare element minerals from pegmatites and alkaline granites: thalenite and brannockite from the Golden Horn Batholith, Washington, and South Platte Pegmatite district, Colorado (USA). Second Eugene E. Foord Pegmatite Symposium July 15-19, 2016 Colorado School of Mines campus, Golden, Colorado

Thénardite

Formula: Na2SO4

Thermonatrite

Formula: Na2CO3 · H2O

Thorianite

Formula: ThO2

Titanite

Formula: CaTi(SiO4)O

Habit: wedge shaped

Colour: colorless to smokey gray, red-brown to Orange

'Tourmaline'

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

Tremolite

Formula: ◻Ca2Mg5(Si8O22)(OH)2

Localities:

Number Nine Claim, Myer Creek Mining District, Okanogan County, Washington, USA
Buckhorn Mine, Southwest Zone and Gold Bowl (Crown Jewel) Zone, Buckhorn Mountain, Myer Creek Mining District, Okanogan County, Washington, USA

Trona

Formula: Na3H(CO3)2 · 2H2O

Tungstite

Formula: WO3 · H2O

Valentinite

Formula: Sb2O3

Description: Bart Cannon ID of specimens field collected by Elwin Magill around 1965.

Vermiculite

Formula: Mg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O

Description: Associated with limonite pseudos after siderite, on quartz.

Vesuvianite

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

Localities:

Controller and Red Bird Prospect, Nespelem Mining District, Okanogan County, Washington, USA
Great Western Mine, Nespelem Mining District, Okanogan County, Washington, USA
Hidden Treasure and Ramsey Prospect, Nespelem Mining District, Okanogan County, Washington, USA
Rebecca Prospect, Nespelem Mining District, Okanogan County, Washington, USA
Evening Prospect, Nespelem Mining District, Okanogan County, Washington, USA

'Wolframite Group'

Wollastonite

Formula: Ca3(Si3O9)

Wulfenite

Formula: Pb(MoO4)

Habit: rounded stick like crystals

Description: found only a few cavities in one pegmatite.

Xenotime-(Y)

Formula: Y(PO4)

Yarrowite

Formula: Cu9S8

Zaratite

Formula: Ni3(CO3)(OH)4 · 4H2O ?

Zektzerite (TL)

Formula: LiNaZrSi6O15

Type Locality:

Habit: pseudohexagonal to tabular orthorombic crsytals

Colour: colorless, white, pink, orange-tan

Zircon

Formula: Zr(SiO4)

Habit: tetragonal prisms, bipyrmidal crystals.

Colour: grey-green, yellow to orange-red

Zoisite

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

Localities:

Buckhorn Mine, Southwest Zone and Gold Bowl (Crown Jewel) Zone, Buckhorn Mountain, Myer Creek Mining District, Okanogan County, Washington, USA
Tunk Creek, Okanogan County, Washington, USA
Roosevelt Mine, Buckhorn Mountain, Myer Creek Mining District, Okanogan County, Washington, USA ? (more information)

Zoisite var. Thulite

Formula: {Ca2}{Al,Mn3+3}(Si2O7)(SiO4)O(OH)