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Washington Co., Idaho, USA

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Detailed Mineral List:

Acanthite
Formula:	Ag₂S
Locality:	Ruthberg District, Washington Co., Idaho, USA







Actinolite
Formula:	☐{Ca₂}{(Mg,Fe²⁺)₅}(Si₈O₂₂)(OH)₂
Localities:	Climax Prospect (Bownlee Creek Deposit), Cuddy Mountain District, Washington Co., Idaho, USA Iron Prospect (MRDS - 10070206), Cuddy Mountain District, Washington Co., Idaho, USA Railroad Mine (Held Mine), Cuddy Mountain District, Washington Co., Idaho, USA Skarn Prospect, Sturgill Peak Area, Washington Co., Idaho, USA







Analcime
Formula:	Na₂(Al₂Si₄O₁₂) · 2H₂O
Locality:	Highway 95 Roadcuts, Middle Fork of Weiser River, Washington Co., Idaho, USA







'Andradite-Grossular Series'
Localities:	Mortimer Prospect (Iron Mountain Mining Company; Siegwein/Standard; Abundance; Montana; Campbell), Iron Mountain District, Washington Co., Idaho, USA Standard Specularite Prospect (Siegwein), Iron Mountain District, Washington Co., Idaho, USA Iron Mountain District, Washington Co., Idaho, USA Montana Prospect, Iron Mountain District, Washington Co., Idaho, USA








Anglesite
Formula:	PbSO₄
Locality:	Lead Zone Mine (Keystone and Galena), Cuddy Mountain District, Washington Co., Idaho, USA







'Apophyllite'
Locality:	Highway 95 Roadcuts, Middle Fork of Weiser River, Washington Co., Idaho, USA








Augite
Formula:	(Ca,Na)(Mg,Fe²⁺,Al,Fe³⁺,Ti)[(Si,Al)₂O₆]
Locality:	East Brownlee Creek Prospect Pits, Cuddy Mountain District, Washington Co., Idaho, USA







Baryte
Formula:	BaSO₄
Localities:	Eagan Mine (Egan), Mineral Hill District, Washington Co., Idaho, USA Iron Prospect (MRDS - 10070206), Cuddy Mountain District, Washington Co., Idaho, USA IXL Mine (Red Ledge), Cuddy Mountain District, Washington Co., Idaho, USA







Beidellite
Formula:	(Na,Ca_0.5)_0.3Al₂((Si,Al)₄O₁₀)(OH)₂ · nH₂O
Locality:	Idaho Almaden Mine (Nutmeg; U.S.A. Anna; Almaden; Almaden Project), Weiser District, Washington Co., Idaho, USA







Biotite
Localities:	Diatomite Mine (MRDS - 10070229), Weiser, Washington Co., Idaho, USA Diatomite Occurrence (MRDS - 10093747), Weiser District, Washington Co., Idaho, USA IXL Mine (Red Ledge), Cuddy Mountain District, Washington Co., Idaho, USA








Bismuth
Formula:	Bi
Locality:	Railroad Mine (Held Mine), Cuddy Mountain District, Washington Co., Idaho, USA







Bornite
Formula:	Cu₅FeS₄
Localities:	IXL Mine (Red Ledge), Cuddy Mountain District, Washington Co., Idaho, USA Railroad Mine (Held Mine), Cuddy Mountain District, Washington Co., Idaho, USA







Boulangerite
Formula:	Pb₅Sb₄S₁₁
Locality:	Silver Still Mine (North Star Property), Mineral Hill District, Washington Co., Idaho, USA







Bournonite
Formula:	PbCuSbS₃
Locality:	Silver Still Mine (North Star Property), Mineral Hill District, Washington Co., Idaho, USA







Calcite
Formula:	CaCO₃
Localities:	Recorded from at least 15 localities in this region.







Cerussite
Formula:	PbCO₃
Locality:	Ruthberg District, Washington Co., Idaho, USA







'Chabazite'
Locality:	Highway 95 Roadcuts, Middle Fork of Weiser River, Washington Co., Idaho, USA








Chalcopyrite
Formula:	CuFeS₂
Localities:	Recorded from at least 32 localities in this region.







Chamosite
Formula:	(Fe²⁺,Mg)₅Al(AlSi₃O₁₀)(OH)₈
Locality:	Iron Mountain District, Washington Co., Idaho, USA







Chlorargyrite
Formula:	AgCl
Locality:	Ruthberg District, Washington Co., Idaho, USA







'Chlorite Group'
Localities:	Handy Mine (Columbine Gypsum; Rock Creek), Mineral Mountain Area, Washington Co., Idaho, USA Unnamed pit, Iron Mountain, Washington Co., Idaho, USA








Chrysocolla
Formula:	Cu_2-xAl_x(H_2-xSi₂O₅)(OH)₄ · nH₂O (x < 1)
Localities:	Grade Creek Prospect, Cuddy Mountain District, Washington Co., Idaho, USA Little Bar, Snake River, Washington Co., Idaho, USA Climax Prospect (Bownlee Creek Deposit), Cuddy Mountain District, Washington Co., Idaho, USA East Brownlee Creek Prospect Pits, Cuddy Mountain District, Washington Co., Idaho, USA







Cinnabar
Formula:	HgS
Localities:	Recorded from at least 9 localities in this region.







'Clay'
Localities:	Diatomite Mine (MRDS - 10070229), Weiser, Washington Co., Idaho, USA Diatomite Occurrence (MRDS - 10078450), Monroe District, Washington Co., Idaho, USA Diatomite Occurrence, Weiser, Washington Co., Idaho, USA








Cuprite
Formula:	Cu₂O
Locality:	Little Bar, Snake River, Washington Co., Idaho, USA







Dravite
Formula:	Na(Mg₃)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
Locality:	Unnamed pit, Iron Mountain, Washington Co., Idaho, USA







Enargite
Formula:	Cu₃AsS₄
Locality:	Silver Still Mine (North Star Property), Mineral Hill District, Washington Co., Idaho, USA







Epidote
Formula:	{Ca₂}{Al₂Fe³⁺}(Si₂O₇)(SiO₄)O(OH)
Localities:	Four V Prospect, Cuddy Mountain District, Washington Co., Idaho, USA Gabbro Prospect, Sturgill Peak Area, Washington Co., Idaho, USA Goodrich Creek Canyon Prospect, Cuddy Mountain District, Washington Co., Idaho, USA Railroad Mine (Held Mine), Cuddy Mountain District, Washington Co., Idaho, USA Skarn Prospect, Sturgill Peak Area, Washington Co., Idaho, USA







Galena
Formula:	PbS
Localities:	Recorded from at least 14 localities in this region.







'Garnet'
Formula:	X₃Z₂(SiO₄)₃
Localities:	Climax Prospect (Bownlee Creek Deposit), Cuddy Mountain District, Washington Co., Idaho, USA Skarn Prospect, Sturgill Peak Area, Washington Co., Idaho, USA East Brownlee Creek Prospect Pits, Cuddy Mountain District, Washington Co., Idaho, USA






Photo: © Alan Goldstein. Garnet from Iron Mountain District, Washington Co., Idaho, USA
Goethite
Formula:	α-Fe³⁺O(OH)
Locality:	Thorn Spring Prospect, Mineral Hill District, Washington Co., Idaho, USA







Gold
Formula:	Au
Localities:	Con Dor Mine (Condor; Jessie), Mineral Hill District, Washington Co., Idaho, USA Cuddy Mine, Cuddy Mountain District, Washington Co., Idaho, USA Freeze Prospect, Cuddy Mountain District, Washington Co., Idaho, USA Gold Prospect (MRDS - 10070088), Sturgill Peak Area, Washington Co., Idaho, USA Sturgill Creek Placer, Sturgill Creek Area, Washington Co., Idaho, USA







Grossular
Formula:	Ca₃Al₂(SiO₄)₃
Locality:	Unnamed pit, Iron Mountain, Washington Co., Idaho, USA






Photo: © JSS. Grossular from Iron Mountain District, Washington Co., Idaho, USA
Gypsum
Formula:	CaSO₄ · 2H₂O
Localities:	Midvale, Washington Co., Idaho, USA Highway 95, Weiser, Washington Co., Idaho, USA Bell Mine (Silver Bell), Mineral Hill District, Washington Co., Idaho, USA Gypsum Mine (MRDS - 10079113), Mineral Hill District, Washington Co., Idaho, USA Handy Mine (Columbine Gypsum; Rock Creek), Mineral Mountain Area, Washington Co., Idaho, USA






Photo: © BT. Gypsum from Highway 95, Weiser, Washington Co., Idaho, USA
Halloysite
Formula:	Al₂(Si₂O₅)(OH)₄
Locality:	Idaho Almaden Mine (Nutmeg; U.S.A. Anna; Almaden; Almaden Project), Weiser District, Washington Co., Idaho, USA







Hematite
Formula:	Fe₂O₃
Localities:	Recorded from at least 7 localities in this region.







Hematite var: Specularite
Locality:	Standard Specularite Prospect (Siegwein), Iron Mountain District, Washington Co., Idaho, USA








Jarosite
Formula:	KFe³⁺ ₃(SO₄)₂(OH)₆
Locality:	Thorn Spring Prospect, Mineral Hill District, Washington Co., Idaho, USA







Kaolinite
Formula:	Al₂(Si₂O₅)(OH)₄
Localities:	Goodrich Creek Canyon Prospect, Cuddy Mountain District, Washington Co., Idaho, USA Idaho Almaden Mine (Nutmeg; U.S.A. Anna; Almaden; Almaden Project), Weiser District, Washington Co., Idaho, USA







'K Feldspar'
Locality:	Edna May Prospect (Mundee Mines?; Snowslide Prospect; Lavender), Brownlee Dam Area, Washington Co., Idaho, USA








Limonite
Formula:	FeO(OH) · nH₂O
Localities:	Campbell Magnetite Deposit Prospect (W. J. Bryan; Campbell Deposit; Siegwein Claims; Barton; Last Chance), Iron Mountain District, Washington Co., Idaho, USA Gold Prospect (MRDS - 10070088), Sturgill Peak Area, Washington Co., Idaho, USA Iron Prospect (MRDS - 10070206), Cuddy Mountain District, Washington Co., Idaho, USA Montana Prospect, Iron Mountain District, Washington Co., Idaho, USA Idaho Almaden Mine (Nutmeg; U.S.A. Anna; Almaden; Almaden Project), Weiser District, Washington Co., Idaho, USA







Magnetite
Formula:	Fe²⁺Fe³⁺₂O₄
Localities:	Recorded from at least 11 localities in this region.







Malachite
Formula:	Cu₂(CO₃)(OH)₂
Localities:	Recorded from at least 10 localities in this region.







Marcasite
Formula:	FeS₂
Localities:	Bell Mine (Silver Bell), Mineral Hill District, Washington Co., Idaho, USA IXL Mine (Red Ledge), Cuddy Mountain District, Washington Co., Idaho, USA Mariah Mine (Maria; Black Maria), Mineral Hill District, Washington Co., Idaho, USA Silver Still Mine (North Star Property), Mineral Hill District, Washington Co., Idaho, USA







Mesolite
Formula:	Na₂Ca₂Si₉Al₆O₃₀ · 8H₂O
Locality:	Highway 95 Roadcuts, Middle Fork of Weiser River, Washington Co., Idaho, USA







'Mica Group'
Locality:	Diatomite Occurrence, Weiser, Washington Co., Idaho, USA








Molybdenite
Formula:	MoS₂
Localities:	IXL Mine (Red Ledge), Cuddy Mountain District, Washington Co., Idaho, USA Kismet Prospect, Cuddy Mountain District, Washington Co., Idaho, USA







Muscovite var: Sericite
Locality:	Goodrich Creek Canyon Prospect, Cuddy Mountain District, Washington Co., Idaho, USA








Opal
Formula:	SiO₂ · nH₂O
Localities:	Idaho Almaden Mine (Nutmeg; U.S.A. Anna; Almaden; Almaden Project), Weiser District, Washington Co., Idaho, USA Helen Zucker Prospect (Zucker Property; Parker Group), Weiser District, Washington Co., Idaho, USA Virginia L. Claims (Raft Creek Cinnabar; Lackey Mine), Weiser District, Washington Co., Idaho, USA







Opal var: Diatomite
Localities:	Diatomite Mine (MRDS - 10070229), Weiser, Washington Co., Idaho, USA Diatomite Occurrence (MRDS - 10078450), Monroe District, Washington Co., Idaho, USA Diatomite Occurrence (MRDS - 10093747), Weiser District, Washington Co., Idaho, USA Diatomite Occurrence, Weiser, Washington Co., Idaho, USA








Orthoclase
Formula:	KAlSi₃O₈
Locality:	Gabbro Prospect, Sturgill Peak Area, Washington Co., Idaho, USA







'Phillipsite'
Locality:	Highway 95 Roadcuts, Middle Fork of Weiser River, Washington Co., Idaho, USA








Phlogopite
Formula:	KMg₃(AlSi₃O₁₀)(OH,F)₂
Locality:	Unnamed pit, Iron Mountain, Washington Co., Idaho, USA






Photo: © JSS. Phlogopite from Iron Mountain District, Washington Co., Idaho, USA
Pyrite
Formula:	FeS₂
Localities:	Recorded from at least 33 localities in this region.







Pyrolusite
Formula:	MnO₂
Localities:	Brownlee Manganese Prospect, Unorganized District, Cambridge Area, Washington Co., Idaho, USA Sturgill Creek Mine (Adams), Sturgill Creek Area, Washington Co., Idaho, USA







Pyrrhotite
Formula:	Fe_1-xS (x = 0 to 0.17)
Localities:	IXL Mine (Red Ledge), Cuddy Mountain District, Washington Co., Idaho, USA Kismet Prospect, Cuddy Mountain District, Washington Co., Idaho, USA







Quartz
Formula:	SiO₂
Localities:	Recorded from at least 40 localities in this region.






Photo: © Don Volkman 2/24/08. Quartz from Beacon Hill, Washington Co., Idaho, USA
Quartz var: Agate
Formula:	SiO₂
Localities:	Weiser, Washington Co., Idaho, USA Beacon Hill, Washington Co., Idaho, USA






Photo: © Don Volkman 2/7/08. Agate from Beacon Hill, Washington Co., Idaho, USA
Quartz var: Amethyst
Formula:	SiO₂
Localities:	Hog Creek area, Washington Co., Idaho, USA Beacon Hill, Washington Co., Idaho, USA







Quartz var: Chalcedony
Localities:	Idaho Almaden Mine (Nutmeg; U.S.A. Anna; Almaden; Almaden Project), Weiser District, Washington Co., Idaho, USA John Coats Prospect (Coats), Weiser District, Washington Co., Idaho, USA Beacon Hill, Washington Co., Idaho, USA








Quartz var: Jasper
Localities:	Snake River, Washington Co., Idaho, USA Standard Specularite Prospect (Siegwein), Iron Mountain District, Washington Co., Idaho, USA Sturgill Creek Mine (Adams), Sturgill Creek Area, Washington Co., Idaho, USA








'Scapolite'
Locality:	Skarn Prospect, Sturgill Peak Area, Washington Co., Idaho, USA








Siderite
Formula:	FeCO₃
Locality:	Eagan Mine (Egan), Mineral Hill District, Washington Co., Idaho, USA







Silver
Formula:	Ag
Locality:	Ruthberg District, Washington Co., Idaho, USA







Sphalerite
Formula:	ZnS
Localities:	Recorded from at least 16 localities in this region.







Stannite
Formula:	Cu₂(Fe,Zn)SnS₄
Locality:	Silver Still Mine (North Star Property), Mineral Hill District, Washington Co., Idaho, USA







Tetrahedrite
Formula:	(Cu,Fe,Ag,Zn)₁₂Sb₄S₁₃
Localities:	Recorded from at least 10 localities in this region.







Thomsonite-Ca
Formula:	NaCa₂Al₅Si₅O₂₀ · 6H₂O
Locality:	Highway 95 Roadcuts, Middle Fork of Weiser River, Washington Co., Idaho, USA







'Tourmaline'
Formula:	A(D₃)G₆(T₆O₁₈)(BO₃)₃Y₃Z
Localities:	Recorded from at least 9 localities in this region.







Tremolite
Formula:	☐{Ca₂}{Mg₅}(Si₈O₂₂)(OH)₂
Localities:	Iron Prospect (MRDS - 10070206), Cuddy Mountain District, Washington Co., Idaho, USA Railroad Mine (Held Mine), Cuddy Mountain District, Washington Co., Idaho, USA







Wurtzite
Formula:	(Zn,Fe)S
Localities:	Black Hawk Mine, Mineral Hill District, Washington Co., Idaho, USA Mariah Mine (Maria; Black Maria), Mineral Hill District, Washington Co., Idaho, USA Silver Still Mine (North Star Property), Mineral Hill District, Washington Co., Idaho, USA

71 entries listed. 50 valid minerals.

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Copyright © Jolyon Ralph and Ida Chau 1993-2011. Jobs in Idaho, USA Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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