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De Lamar Mining District, Owyhee Co., Idaho, USAi
Regional Level Types
De Lamar Mining DistrictMining District
Owyhee Co.County
IdahoState
USACountry

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Key
Latitude & Longitude:
42° North , 116° West (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~141km
Locality type:


50 miles south-southwest of Boise.

Select Mineral List Type

Standard Detailed Gallery Strunz Dana Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded from this region.


Mineral List

Mineral list contains entries from the region specified including sub-localities

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

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Rock list contains entries from the region specified including sub-localities

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

Acanthite
Formula: Ag2S
Reference: Idaho Minerals (2004) L. Ream 2nd ed; Can Mineral 1981 19: 409-410
Aenigmatite
Formula: Na4[Fe2+10Ti2]O4[Si12O36]
Reference: Mineralogical Record, Sep 1995
Aguilarite
Formula: Ag4SeS
Reference: Ream, Lanny R. 2004. Idaho Minerals, 2nd edition, Revised and Updated; Can Mineral 1981 19: 409-410
Baryte
Formula: BaSO4
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Beidellite
Formula: (Na,Ca0.5)0.3Al2((Si,Al)4O10)(OH)2 · nH2O
Reference: Chipera & Bish, Clays and Clay Minerals 45:226
Chalcopyrite
Formula: CuFeS2
Reference: Ream, Lanny R. 2004. Idaho Minerals, 2nd edition, Revised and Updated; Can Mineral 1981 19: 409-410
Chlorargyrite
Formula: AgCl
Reference: R&M 70:4 pp 242-263; Can Mineral 1981 19: 409-410
Copper
Formula: Cu
Reference: Ream, Lanny R. 2004. Idaho Minerals, 2nd edition, Revised and Updated; Can Mineral 1981 19: 409-410
Covellite
Formula: CuS
Reference: Ream, Lanny R. 2004. Idaho Minerals, 2nd edition, Revised and Updated; Can Mineral 1981 19: 409-410
'Electrum'
Formula: (Au,Ag)
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Fischesserite
Formula: Ag3AuSe2
Reference: Extra Lapis English No. 5 Gold
Fluorite
Formula: CaF2
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Goethite
Formula: α-Fe3+O(OH)
Reference: Ream, Lanny R. 2004. Idaho Minerals, 2nd edition, Revised and Updated; Can Mineral 1981 19: 409-410
Gold
Formula: Au
Localities: Reported from at least 8 localities in this region.
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.; Can Mineral 1981 19: 409-410
Jamesonite
Formula: Pb4FeSb6S14
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Jarosite
Formula: KFe3+ 3(SO4)2(OH)6
Reference: Ream, Lanny R. 2004. Idaho Minerals, 2nd edition, Revised and Updated
Kaolinite
Formula: Al2(Si2O5)(OH)4
Reference: Idaho Minerals (2004) L. Ream 2nd ed
Mandarinoite
Formula: Fe3+2(Se4+O3)3 · (6-x)H2O (x = 0.0-1.0)
Description: "The mandarinoite came from the 6316 foot bench at coordinates 45,475 N and 98,030 E in the Sommercamp pit, near level 2 of the pre-1916 underground workings"(Lasmanis et.al.).
Reference: Mitchell, R.S. (1989) Who's Who in Mineral Names. Rocks & Minerals, 64(1), 48-51. Lasmanis, R., Nagel, J., Sturman, B.D., Gait, R.I. (1981) Mandarinoite from the De Lamar silver mine, Owyhee County, Idaho, U.S.A. The Canadian Mineralogist, 19(3), 409-410. Meyer, R. (2011) The Micro Mineral Collector. Friends of Mineralogy National Newsletter, Vol 41(2), 11-16.
Marcasite
Formula: FeS2
Reference: Shannon (1920) The American Journal of Science pp 390-391; Can Mineral 1981 19: 409-410
Miargyrite
Formula: AgSbS2
Reference: Idaho Minerals (2004) L. Ream 2nd ed; Can Mineral 1981 19: 409-410
Naumannite
Formula: Ag2Se
Habit: Reticulated
Reference: R&M 70:4 pp 242-263
Orthoclase
Formula: K(AlSi3O8)
Reference: R&M 70:4 pp 242-263
Polybasite
Formula: [(Ag,Cu)6(Sb,As)2S7][Ag9CuS4]
Reference: R&M 70:4 pp 242-263
Proustite
Formula: Ag3AsS3
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Pyrargyrite
Formula: Ag3SbS3
Reference: Idaho Minerals (2004) L. Ream 2nd ed; Can Mineral 1981 19: 409-410
Pyrite
Formula: FeS2
Reference: R&M 70:4 pp 242-263; Can Mineral 1981 19: 409-410
Quartz
Formula: SiO2
Localities: Reported from at least 12 localities in this region.
Reference: R&M 70:4 pp 242-263; Econ Geol (1985) 80:1467-1514
Selenopolybasite (TL)
Formula: [(Ag,Cu)6(Sb,As)2(S,Se)7][Ag9Cu(S,Se)2Se2]
Type Locality:
Reference: Bindi, L., Evain, M., Menchetti, S. (2007): Selenopolybasite, [(Ag,Cu)6(Sb,As)2(S,Se)7][Ag9Cu(S,Se)2Se2], a new member of the pearceite–polybasite group from the De Lamar mine, Owyhee County, Idaho, USA. Canadian Mineralogist, 45, 1525-1528.
Silver
Formula: Ag
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.; Can Mineral 1981 19: 409-410
Sphalerite
Formula: ZnS
Reference: Ream, Lanny R. 2004. Idaho Minerals, 2nd edition, Revised and Updated; Can Mineral 1981 19: 409-410

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Copper1.AA.05Cu
'Electrum'1.AA.05(Au,Ag)
Gold1.AA.05Au
Silver1.AA.05Ag
Group 2 - Sulphides and Sulfosalts
Acanthite2.BA.35Ag2S
Aguilarite2.BA.55Ag4SeS
Chalcopyrite2.CB.10aCuFeS2
Covellite2.CA.05aCuS
Fischesserite2.BA.75Ag3AuSe2
Jamesonite2.HB.15Pb4FeSb6S14
Marcasite2.EB.10aFeS2
Miargyrite2.HA.10AgSbS2
Naumannite2.BA.55Ag2Se
Polybasite2.GB.15[(Ag,Cu)6(Sb,As)2S7][Ag9CuS4]
Proustite2.GA.05Ag3AsS3
Pyrargyrite2.GA.05Ag3SbS3
Pyrite2.EB.05aFeS2
Selenopolybasite (TL)2.GB.15[(Ag,Cu)6(Sb,As)2(S,Se)7][Ag9Cu(S,Se)2Se2]
Sphalerite2.CB.05aZnS
Group 3 - Halides
Chlorargyrite3.AA.15AgCl
Fluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
Goethite4.00.α-Fe3+O(OH)
Mandarinoite4.JH.15Fe3+2(Se4+O3)3 · (6-x)H2O (x = 0.0-1.0)
Quartz4.DA.05SiO2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Baryte7.AD.35BaSO4
Jarosite7.BC.10KFe3+3(SO4)2(OH)6
Group 9 - Silicates
Aenigmatite9.DH.40Na4[Fe2+10Ti2]O4[Si12O36]
Beidellite9.EC.40(Na,Ca0.5)0.3Al2((Si,Al)4O10)(OH)2 · nH2O
Kaolinite9.ED.05Al2(Si2O5)(OH)4
Orthoclase9.FA.30K(AlSi3O8)

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Copper1.1.1.3Cu
Gold1.1.1.1Au
Silver1.1.1.2Ag
Group 2 - SULFIDES
AmBnXp, with (m+n):p = 2:1
Acanthite2.4.1.1Ag2S
Aguilarite2.4.1.3Ag4SeS
Fischesserite2.4.3.2Ag3AuSe2
Naumannite2.4.1.2Ag2Se
AmXp, with m:p = 1:1
Covellite2.8.12.1CuS
Sphalerite2.8.2.1ZnS
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 1:2
Marcasite2.12.2.1FeS2
Pyrite2.12.1.1FeS2
Group 3 - SULFOSALTS
ø > 4
Polybasite3.1.7.2[(Ag,Cu)6(Sb,As)2S7][Ag9CuS4]
Selenopolybasite (TL)3.1.7.2[(Ag,Cu)6(Sb,As)2(S,Se)7][Ag9Cu(S,Se)2Se2]
ø = 3
Proustite3.4.1.1Ag3AsS3
Pyrargyrite3.4.1.2Ag3SbS3
2 < ø < 2.49
Jamesonite3.6.7.1Pb4FeSb6S14
ø = 2
Miargyrite3.7.3.2AgSbS2
Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
XO(OH)
Goethite6.1.1.2α-Fe3+O(OH)
Group 9 - NORMAL HALIDES
AX
Chlorargyrite9.1.4.1AgCl
AX2
Fluorite9.2.1.1CaF2
Group 28 - ANHYDROUS ACID AND NORMAL SULFATES
AXO4
Baryte28.3.1.1BaSO4
Group 30 - ANHYDROUS SULFATES CONTAINING HYDROXYL OR HALOGEN
(AB)2(XO4)Zq
Jarosite30.2.5.1KFe3+ 3(SO4)2(OH)6
Group 34 - SELENITES, TELLURITES AND SULFITES
A2(XO3)3·xH2O
Mandarinoite34.3.4.1Fe3+2(Se4+O3)3 · (6-x)H2O (x = 0.0-1.0)
Group 69 - INOSILICATES Chains with Side Branches or Loops
Chains with Side Branches or Loops with P>2
Aenigmatite69.2.1a.1Na4[Fe2+10Ti2]O4[Si12O36]
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 clays
Beidellite71.3.1a.1(Na,Ca0.5)0.3Al2((Si,Al)4O10)(OH)2 · nH2O
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with Al-Si frameworks
Orthoclase76.1.1.1K(AlSi3O8)
Unclassified Minerals, Mixtures, etc.
'Electrum'-(Au,Ag)
Kaolinite-Al2(Si2O5)(OH)4

List of minerals for each chemical element

HHydrogen
H MandarinoiteFe23+(Se4+O3)3 · (6-x)H2O (x = 0.0-1.0)
H Goethiteα-Fe3+O(OH)
H Beidellite(Na,Ca0.5)0.3Al2((Si,Al)4O10)(OH)2 · nH2O
H KaoliniteAl2(Si2O5)(OH)4
H JarositeKFe3+ 3(SO4)2(OH)6
OOxygen
O MandarinoiteFe23+(Se4+O3)3 · (6-x)H2O (x = 0.0-1.0)
O Goethiteα-Fe3+O(OH)
O QuartzSiO2
O OrthoclaseK(AlSi3O8)
O Beidellite(Na,Ca0.5)0.3Al2((Si,Al)4O10)(OH)2 · nH2O
O KaoliniteAl2(Si2O5)(OH)4
O AenigmatiteNa4[Fe102+Ti2]O4[Si12O36]
O BaryteBaSO4
O JarositeKFe3+ 3(SO4)2(OH)6
FFluorine
F FluoriteCaF2
NaSodium
Na Beidellite(Na,Ca0.5)0.3Al2((Si,Al)4O10)(OH)2 · nH2O
Na AenigmatiteNa4[Fe102+Ti2]O4[Si12O36]
AlAluminium
Al OrthoclaseK(AlSi3O8)
Al Beidellite(Na,Ca0.5)0.3Al2((Si,Al)4O10)(OH)2 · nH2O
Al KaoliniteAl2(Si2O5)(OH)4
SiSilicon
Si QuartzSiO2
Si OrthoclaseK(AlSi3O8)
Si Beidellite(Na,Ca0.5)0.3Al2((Si,Al)4O10)(OH)2 · nH2O
Si KaoliniteAl2(Si2O5)(OH)4
Si AenigmatiteNa4[Fe102+Ti2]O4[Si12O36]
SSulfur
S Selenopolybasite[(Ag,Cu)6(Sb,As)2(S,Se)7][Ag9Cu(S,Se)2Se2]
S PyriteFeS2
S MarcasiteFeS2
S AguilariteAg4SeS
S AcanthiteAg2S
S PyrargyriteAg3SbS3
S MiargyriteAgSbS2
S ChalcopyriteCuFeS2
S SphaleriteZnS
S CovelliteCuS
S Polybasite[(Ag,Cu)6(Sb,As)2S7][Ag9CuS4]
S JamesonitePb4FeSb6S14
S ProustiteAg3AsS3
S BaryteBaSO4
S JarositeKFe3+ 3(SO4)2(OH)6
ClChlorine
Cl ChlorargyriteAgCl
KPotassium
K OrthoclaseK(AlSi3O8)
K JarositeKFe3+ 3(SO4)2(OH)6
CaCalcium
Ca Beidellite(Na,Ca0.5)0.3Al2((Si,Al)4O10)(OH)2 · nH2O
Ca FluoriteCaF2
TiTitanium
Ti AenigmatiteNa4[Fe102+Ti2]O4[Si12O36]
FeIron
Fe MandarinoiteFe23+(Se4+O3)3 · (6-x)H2O (x = 0.0-1.0)
Fe PyriteFeS2
Fe MarcasiteFeS2
Fe ChalcopyriteCuFeS2
Fe Goethiteα-Fe3+O(OH)
Fe AenigmatiteNa4[Fe102+Ti2]O4[Si12O36]
Fe JamesonitePb4FeSb6S14
Fe JarositeKFe3+ 3(SO4)2(OH)6
CuCopper
Cu Selenopolybasite[(Ag,Cu)6(Sb,As)2(S,Se)7][Ag9Cu(S,Se)2Se2]
Cu ChalcopyriteCuFeS2
Cu CovelliteCuS
Cu CopperCu
Cu Polybasite[(Ag,Cu)6(Sb,As)2S7][Ag9CuS4]
ZnZinc
Zn SphaleriteZnS
AsArsenic
As Selenopolybasite[(Ag,Cu)6(Sb,As)2(S,Se)7][Ag9Cu(S,Se)2Se2]
As Polybasite[(Ag,Cu)6(Sb,As)2S7][Ag9CuS4]
As ProustiteAg3AsS3
SeSelenium
Se Selenopolybasite[(Ag,Cu)6(Sb,As)2(S,Se)7][Ag9Cu(S,Se)2Se2]
Se MandarinoiteFe23+(Se4+O3)3 · (6-x)H2O (x = 0.0-1.0)
Se NaumanniteAg2Se
Se AguilariteAg4SeS
Se FischesseriteAg3AuSe2
AgSilver
Ag Selenopolybasite[(Ag,Cu)6(Sb,As)2(S,Se)7][Ag9Cu(S,Se)2Se2]
Ag NaumanniteAg2Se
Ag AguilariteAg4SeS
Ag AcanthiteAg2S
Ag PyrargyriteAg3SbS3
Ag MiargyriteAgSbS2
Ag ChlorargyriteAgCl
Ag SilverAg
Ag Polybasite[(Ag,Cu)6(Sb,As)2S7][Ag9CuS4]
Ag FischesseriteAg3AuSe2
Ag Electrum(Au,Ag)
Ag ProustiteAg3AsS3
SbAntimony
Sb Selenopolybasite[(Ag,Cu)6(Sb,As)2(S,Se)7][Ag9Cu(S,Se)2Se2]
Sb PyrargyriteAg3SbS3
Sb MiargyriteAgSbS2
Sb Polybasite[(Ag,Cu)6(Sb,As)2S7][Ag9CuS4]
Sb JamesonitePb4FeSb6S14
BaBarium
Ba BaryteBaSO4
AuGold
Au GoldAu
Au FischesseriteAg3AuSe2
Au Electrum(Au,Ag)
PbLead
Pb JamesonitePb4FeSb6S14

External Links


Localities in this Region

Other Regions, Features and Areas containing this locality

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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.
 
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