Log InRegister
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreOur ScienceMindat Newsletter [Free Download]Contact Us
Donate to MindatSponsor a PageCorporate SponsorshipSponsored Pages
Learning CenterWhat Is a Mineral?The Most Common Minerals on EarthInformation for EducatorsMindat ArticlesMindat Newsletter [Free Download]The ElementsThe Mineral Quiz
Search FormMinerals by PropertiesMinerals by ChemistryMineral Visual ExplorerAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDMinerals by CountryAlphabetical Mineral IndexAlphabetical Locality SearchMineral Association SearchList of CountriesLocalities Near MePhoto SearchSearch ArticlesSearch GlossaryThe Rock H. Currier Digital LibraryMore Search Options
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
MineralsPetrologyFossilsMeteoritesGeologic Time
Mining CompaniesStatisticsMineral MuseumsClubs & OrganizationsMineral Shows & EventsDevice SettingsTime Machine
Read DiscussionsIdentification Request
Photo SearchPhoto GalleriesSearch by ColourPhoto Colour ExplorerNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography

Poorman Mine (Oso; Belle Peck Tunnels), Silver City Mining District (Carson Mining District), Owyhee County, Idaho, USAi
Regional Level Types
Poorman Mine (Oso; Belle Peck Tunnels)Mine
Silver City Mining District (Carson Mining District)Mining District
Owyhee CountyCounty
IdahoState
USACountry

This page is currently not sponsored. Click here to sponsor this page.
PhotosMapsSearch
01890580017272012494870.jpg
Owyheeite

Poorman Mine, Silver City Mining District, Owyhee County, Idaho, USA
04863440017272012509899.jpg
Owyheeite

Poorman Mine, Silver City Mining District, Owyhee County, Idaho, USA
04097180017272012527733.jpg
Owyheeite

Poorman Mine, Silver City Mining District, Owyhee County, Idaho, USA
01890580017272012494870.jpg
Owyheeite

Poorman Mine, Silver City Mining District, Owyhee County, Idaho, USA
04863440017272012509899.jpg
Owyheeite

Poorman Mine, Silver City Mining District, Owyhee County, Idaho, USA
04097180017272012527733.jpg
Owyheeite

Poorman Mine, Silver City Mining District, Owyhee County, Idaho, USA
01890580017272012494870.jpg
Owyheeite

Poorman Mine, Silver City Mining District, Owyhee County, Idaho, USA
04863440017272012509899.jpg
Owyheeite

Poorman Mine, Silver City Mining District, Owyhee County, Idaho, USA
Latitude & Longitude (WGS84):
43° 0' 15'' North , 116° 42' 35'' West
Latitude & Longitude (decimal):
43.00444,-116.71000
GRN:
N29W62
Type:
Mine
Köppen climate type:
BSk : Cold semi-arid (steppe) climate
Nearest Settlements:
PlacePopulationDistance
Jordan Valley174 (2017)28.2km
Melba531 (2017)43.8km
Kuna17,226 (2017)59.0km
Mindat Locality ID:
3743
Long-form identifier:
mindat:1:2:3743:6
GUID (UUID V4):
0


A silver mine.

Alteration: Silicification; Epidote; Chlorite; Sericite; Kaolin

Commodity: ORE WORTH $46 A TON IN 1870

Development: 7 patented claims ( 1937 )

Geology: Granodiorite cut by granite porphyry.

Rock formation(s): Silver City Granite-Granodiorite
Silver City Granite-Granodiorite


Ore(s): Fracture Intersections

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


27 valid minerals. 1 (TL) - type locality of valid minerals.

Rock Types Recorded


Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Acanthite
Formula: Ag2S
ⓘ Aguilarite
Formula: Ag4SeS
ⓘ Azurite
Formula: Cu3(CO3)2(OH)2
ⓘ Baryte
Formula: BaSO4
ⓘ Beidellite
Formula: (Na,Ca0.5)0.3Al2((Si,Al)4O10)(OH)2 · nH2O
ⓘ Billingsleyite ?
Formula: Ag7AsS6
ⓘ Calcite
Formula: CaCO3
ⓘ Chalcopyrite
Formula: CuFeS2
ⓘ Chlorargyrite
Formula: AgCl
ⓘ 'Chlorite Group'
ⓘ Epidote
Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
ⓘ Fluorite
Formula: CaF2
ⓘ Galena
Formula: PbS
ⓘ 'K Feldspar'
ⓘ 'K Feldspar var. Adularia'
Formula: KAlSi3O8
ⓘ Malachite
Formula: Cu2(CO3)(OH)2
ⓘ Marcasite
Formula: FeS2
ⓘ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
ⓘ Muscovite var. Sericite
Formula: KAl2(AlSi3O10)(OH)2
ⓘ Native Gold
Formula: Au
ⓘ Native Gold var. Electrum
Formula: (Au,Ag)
ⓘ Native Silver
Formula: Ag
ⓘ Owyheeite (TL)
Formula: Ag3Pb10Sb11S28
Type Locality:
ⓘ Polybasite
Formula: [Ag6Sb2S7][Ag9CuS4]
ⓘ Proustite
Formula: Ag3AsS3
ⓘ Pyrargyrite
Formula: Ag3SbS3
ⓘ Pyrite
Formula: FeS2
ⓘ Quartz
Formula: SiO2
ⓘ Siderite
Formula: FeCO3
ⓘ Sphalerite
Formula: ZnS
ⓘ Stephanite
Formula: Ag5SbS4
ⓘ Vivianite
Formula: Fe2+Fe2+2(PO4)2 · 8H2O

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘNative Gold
var. Electrum		1.AA.05(Au,Ag)
ⓘ1.AA.05Au
ⓘNative Silver1.AA.05Ag
Group 2 - Sulphides and Sulfosalts
ⓘAcanthite2.BA.35Ag2S
ⓘAguilarite2.BA.55Ag4SeS
ⓘSphalerite2.CB.05aZnS
ⓘChalcopyrite2.CB.10aCuFeS2
ⓘGalena2.CD.10PbS
ⓘPyrite2.EB.05aFeS2
ⓘMarcasite2.EB.10aFeS2
ⓘProustite2.GA.05Ag3AsS3
ⓘPyrargyrite2.GA.05Ag3SbS3
ⓘStephanite2.GB.10Ag5SbS4
ⓘPolybasite2.GB.15[Ag6Sb2S7][Ag9CuS4]
ⓘOwyheeite (TL)2.HC.35Ag3Pb10Sb11S28
ⓘBillingsleyite ?2.KB.05Ag7AsS6
Group 3 - Halides
ⓘChlorargyrite3.AA.15AgCl
ⓘFluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
ⓘQuartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
ⓘSiderite5.AB.05FeCO3
ⓘAzurite5.BA.05Cu3(CO3)2(OH)2
ⓘMalachite5.BA.10Cu2(CO3)(OH)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘBaryte7.AD.35BaSO4
Group 8 - Phosphates, Arsenates and Vanadates
ⓘVivianite8.CE.40Fe2+Fe2+2(PO4)2 · 8H2O
Group 9 - Silicates
ⓘEpidote9.BG.05a(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
ⓘMuscovite9.EC.15KAl2(AlSi3O10)(OH)2
ⓘvar. Sericite9.EC.15KAl2(AlSi3O10)(OH)2
ⓘBeidellite9.EC.40(Na,Ca0.5)0.3Al2((Si,Al)4O10)(OH)2 · nH2O
Unclassified
ⓘ'K Feldspar
var. Adularia'		-KAlSi3O8
ⓘ'Chlorite Group'-
ⓘ'K Feldspar'-

List of minerals for each chemical element

HHydrogen
Hⓘ AzuriteCu3(CO3)2(OH)2
Hⓘ Beidellite(Na,Ca0.5)0.3Al2((Si,Al)4O10)(OH)2 · nH2O
Hⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Hⓘ MalachiteCu2(CO3)(OH)2
Hⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Hⓘ VivianiteFe2+Fe22+(PO4)2 · 8H2O
Hⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
CCarbon
Cⓘ AzuriteCu3(CO3)2(OH)2
Cⓘ CalciteCaCO3
Cⓘ MalachiteCu2(CO3)(OH)2
Cⓘ SideriteFeCO3
OOxygen
Oⓘ K Feldspar var. AdulariaKAlSi3O8
Oⓘ AzuriteCu3(CO3)2(OH)2
Oⓘ BaryteBaSO4
Oⓘ Beidellite(Na,Ca0.5)0.3Al2((Si,Al)4O10)(OH)2 · nH2O
Oⓘ CalciteCaCO3
Oⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Oⓘ MalachiteCu2(CO3)(OH)2
Oⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Oⓘ QuartzSiO2
Oⓘ SideriteFeCO3
Oⓘ VivianiteFe2+Fe22+(PO4)2 · 8H2O
Oⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
FFluorine
Fⓘ FluoriteCaF2
NaSodium
Naⓘ Beidellite(Na,Ca0.5)0.3Al2((Si,Al)4O10)(OH)2 · nH2O
AlAluminium
Alⓘ K Feldspar var. AdulariaKAlSi3O8
Alⓘ Beidellite(Na,Ca0.5)0.3Al2((Si,Al)4O10)(OH)2 · nH2O
Alⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Alⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Alⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
SiSilicon
Siⓘ K Feldspar var. AdulariaKAlSi3O8
Siⓘ Beidellite(Na,Ca0.5)0.3Al2((Si,Al)4O10)(OH)2 · nH2O
Siⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Siⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Siⓘ QuartzSiO2
Siⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
PPhosphorus
Pⓘ VivianiteFe2+Fe22+(PO4)2 · 8H2O
SSulfur
Sⓘ AcanthiteAg2S
Sⓘ AguilariteAg4SeS
Sⓘ BaryteBaSO4
Sⓘ BillingsleyiteAg7AsS6
Sⓘ ChalcopyriteCuFeS2
Sⓘ GalenaPbS
Sⓘ MarcasiteFeS2
Sⓘ OwyheeiteAg3Pb10Sb11S28
Sⓘ Polybasite[Ag6Sb2S7][Ag9CuS4]
Sⓘ ProustiteAg3AsS3
Sⓘ PyrargyriteAg3SbS3
Sⓘ PyriteFeS2
Sⓘ SphaleriteZnS
Sⓘ StephaniteAg5SbS4
ClChlorine
Clⓘ ChlorargyriteAgCl
KPotassium
Kⓘ K Feldspar var. AdulariaKAlSi3O8
Kⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Kⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
CaCalcium
Caⓘ Beidellite(Na,Ca0.5)0.3Al2((Si,Al)4O10)(OH)2 · nH2O
Caⓘ CalciteCaCO3
Caⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Caⓘ FluoriteCaF2
FeIron
Feⓘ ChalcopyriteCuFeS2
Feⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Feⓘ MarcasiteFeS2
Feⓘ PyriteFeS2
Feⓘ SideriteFeCO3
Feⓘ VivianiteFe2+Fe22+(PO4)2 · 8H2O
CuCopper
Cuⓘ AzuriteCu3(CO3)2(OH)2
Cuⓘ ChalcopyriteCuFeS2
Cuⓘ MalachiteCu2(CO3)(OH)2
Cuⓘ Polybasite[Ag6Sb2S7][Ag9CuS4]
ZnZinc
Znⓘ SphaleriteZnS
AsArsenic
Asⓘ BillingsleyiteAg7AsS6
Asⓘ ProustiteAg3AsS3
SeSelenium
Seⓘ AguilariteAg4SeS
AgSilver
Agⓘ AcanthiteAg2S
Agⓘ AguilariteAg4SeS
Agⓘ BillingsleyiteAg7AsS6
Agⓘ ChlorargyriteAgCl
Agⓘ Native Gold var. Electrum(Au,Ag)
Agⓘ OwyheeiteAg3Pb10Sb11S28
Agⓘ Polybasite[Ag6Sb2S7][Ag9CuS4]
Agⓘ ProustiteAg3AsS3
Agⓘ PyrargyriteAg3SbS3
Agⓘ Native SilverAg
Agⓘ StephaniteAg5SbS4
SbAntimony
Sbⓘ OwyheeiteAg3Pb10Sb11S28
Sbⓘ Polybasite[Ag6Sb2S7][Ag9CuS4]
Sbⓘ PyrargyriteAg3SbS3
Sbⓘ StephaniteAg5SbS4
BaBarium
Baⓘ BaryteBaSO4
AuGold
Auⓘ Native Gold var. Electrum(Au,Ag)
Auⓘ Native GoldAu
PbLead
Pbⓘ GalenaPbS
Pbⓘ OwyheeiteAg3Pb10Sb11S28

Other Databases

Link to USGS MRDS:10069926

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America PlateTectonic Plate

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Dana 7: I: 98 & 365.
Lindgren, W., (1898), the Gold and Silver Veins of Silver City, Delamar and Other Mining Districts in Idaho: 20th Ann. Report, U.S.G.S. P. 75 (part 3).
Shannon (1921).
Piper, A. M., and Laney, F. B., (1926), Geology and Metalliferous Resources of the Region About Silver City, Idaho: Idaho Bureau of Mines and Geology Bull. 11, 165 P.
Campbell, A., (1935) , 37th Ann. Rept. of the Mining Industry of Idaho for 1935.
Palache, Charles; Berman, Harry; Frondel, Clifford (1951) The System of Mineralogy (7th ed.) Vol. 2 - Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Etc. John Wiley and Sons.
Asher, R. R., (1968), Geology and Mineral Resources of a Portion of the Silver City Region, Owyhee County, Idaho: Idaho Bureau of Mines and Geology Pamphlet 138, 106 P.
(1985): American Mineralogist 70: 440 (abstract).
Collins, A. (2012) Geology, Geochemistry and Geochronology of the mid-Miocene, Low-Sulfidation Epithermal Gold-Silver Ores on War Eagle Mountain, Silver City District, Idaho. MS thesis Auburn University, Alabama.
Quick NavTopCommoditiesMineral ListRock TypesOther DatabasesOther RegionsReferences
 
and/or  
Mindat.org® is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Mindat® and mindat.org® are registered trademarks of the Hudson Institute of Mineralogy.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2026, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph and Ida Chau.
Content on this site may not be used to train, fine-tune, or otherwise develop artificial intelligence or machine learning models without prior written permission - see our Terms & Conditions.
To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844. doi:10.2138/am-2024-9486.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: October 22, 2026 02:31:21 Page updated: April 30, 2026 17:04:41
Go to top of page