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Darwin Mines (Darwin group; Defiance; Driver; Independence; Lane; Liberty; Lucky Jim; Southwest and Thompson; Bernon; Rip Van Winkle; Mexicanus Colorado Inc.), Darwin, Darwin Mining District, Darwin Hills, Inyo Co., California, USAi
Regional Level Types
Darwin Mines (Darwin group; Defiance; Driver; Independence; Lane; Liberty; Lucky Jim; Southwest and Thompson; Bernon; Rip Van Winkle; Mexicanus Colorado Inc.)Group of Mines
Darwin- not defined -
Darwin Mining DistrictMining District
Darwin HillsGroup of Hills
Inyo Co.County
CaliforniaState
USACountry

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Key
Latitude & Longitude (WGS84):
36° 16' 49'' North , 117° 35' 59'' West
Latitude & Longitude (decimal):
Locality type:
Group of Mines
Nearest Settlements:
PlacePopulationDistance
Olancha192 (2015)36.6km


A group of former Pb-Zn-Ag-W-Cu-Au mines.

NOTE: This group of mines was leased by the firm Mexicanus Colorado Inc. during the early 1970's. The name is mis-spelled in the MRDS database and appears as "Mexicanus Colovgdo Inc A" under MRDS file #10188132, referencing the USGS Minerals Yearbook 1972: 26, 30.

The Company „Project Darwin LLC“ acquired the Darwin Mines and 58 patented mining claims in 1996. They have prepared a good description of these mines and their history and put it on a webpage (see under Links).

Mineralization is a polymetallic replacement deposit (Deposit Model: 72: Polymetallic replacement) hosted in rocks of the Portachuelo Formation (limestone, granodiorite).

Local structures include a thrust fault, igneous intrusions, faults, and folds.

Select Mineral List Type

Standard Detailed Gallery Strunz Dana Chemical Elements

Mineral List


14 valid minerals.

Detailed Mineral List:

Andradite
Formula: Ca3Fe3+2(SiO4)3
Reference: Knopf, Adolf (1914a), The Darwin silver-lead mining district, California: USGS Bulletin 580: 1-18
Calcite
Formula: CaCO3
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.; WARING, C. A., 1915 , INYO COUNTY; 15TH REPT. STATE MINERALOGIST; CALIF. MIN. BUR., P. 95
Cerussite
Formula: PbCO3
Reference: WARING, C. A., 1915 , INYO COUNTY; 15TH REPT. STATE MINERALOGIST; CALIF. MIN. BUR., P. 95
Chalcopyrite
Formula: CuFeS2
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Chrysocolla
Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Reference: WARING, C. A., 1915 , INYO COUNTY; 15TH REPT. STATE MINERALOGIST; CALIF. MIN. BUR., P. 95
'Clays'
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Fluorite
Formula: CaF2
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.; WARING, C. A., 1915 , INYO COUNTY; 15TH REPT. STATE MINERALOGIST; CALIF. MIN. BUR., P. 95
Franckeite
Formula: Fe2+(Pb,Sn2+)6Sn4+2Sb2S14
Reference: Handbook of Mineralogy
Galena
Formula: PbS
Reference: WARING, C. A., 1915 , INYO COUNTY; 15TH REPT. STATE MINERALOGIST; CALIF. MIN. BUR., P. 95
Guanajuatite
Formula: Bi2Se3
Reference: Handbook of Mineralogy
Gypsum
Formula: CaSO4 · 2H2O
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: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Pyrite
Formula: FeS2
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Quartz
Formula: SiO2
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Quartz var. Jasper
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Sphalerite
Formula: ZnS
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
'Tetrahedrite Subgroup'
Formula: Cu6(Cu4C2+2)Sb4S12S
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Chalcopyrite2.CB.10aCuFeS2
Franckeite2.HF.25bFe2+(Pb,Sn2+)6Sn4+2Sb2S14
Galena2.CD.10PbS
Guanajuatite2.DB.05Bi2Se3
Pyrite2.EB.05aFeS2
Sphalerite2.CB.05aZnS
'Tetrahedrite Subgroup'2.GB.05Cu6(Cu4C2+2)Sb4S12S
Group 3 - Halides
Fluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
Quartz4.DA.05SiO2
var. Jasper4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Cerussite5.AB.15PbCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Gypsum7.CD.40CaSO4 · 2H2O
Jarosite7.BC.10KFe3+3(SO4)2(OH)6
Group 9 - Silicates
Andradite9.AD.25Ca3Fe3+2(SiO4)3
Chrysocolla9.ED.20Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Unclassified Minerals, Rocks, etc.
'Clays'-

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmXp, with m:p = 1:1
Galena2.8.1.1PbS
Sphalerite2.8.2.1ZnS
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 2:3
Guanajuatite2.11.2.4Bi2Se3
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 3 - SULFOSALTS
ø > 4
Franckeite3.1.4.2Fe2+(Pb,Sn2+)6Sn4+2Sb2S14
3 <ø < 4
'Tetrahedrite Subgroup'3.3.6.1Cu6(Cu4C2+2)Sb4S12S
Group 9 - NORMAL HALIDES
AX2
Fluorite9.2.1.1CaF2
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Cerussite14.1.3.4PbCO3
Group 29 - HYDRATED ACID AND NORMAL SULFATES
AXO4·xH2O
Gypsum29.6.3.1CaSO4 · 2H2O
Group 30 - ANHYDROUS SULFATES CONTAINING HYDROXYL OR HALOGEN
(AB)2(XO4)Zq
Jarosite30.2.5.1KFe3+ 3(SO4)2(OH)6
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in [6] and >[6] coordination
Andradite51.4.3b.1Ca3Fe3+2(SiO4)3
Group 74 - PHYLLOSILICATES Modulated Layers
Modulated Layers with joined strips
Chrysocolla74.3.2.1Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
'Clays'-
Quartz
var. Jasper
-SiO2

List of minerals for each chemical element

HHydrogen
H JarositeKFe3+ 3(SO4)2(OH)6
H GypsumCaSO4 · 2H2O
H ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
CCarbon
C CalciteCaCO3
C CerussitePbCO3
OOxygen
O QuartzSiO2
O CalciteCaCO3
O JarositeKFe3+ 3(SO4)2(OH)6
O GypsumCaSO4 · 2H2O
O ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
O CerussitePbCO3
O AndraditeCa3Fe23+(SiO4)3
FFluorine
F FluoriteCaF2
AlAluminium
Al ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
SiSilicon
Si QuartzSiO2
Si ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Si AndraditeCa3Fe23+(SiO4)3
SSulfur
S SphaleriteZnS
S PyriteFeS2
S Tetrahedrite SubgroupCu6(Cu4C22+)Sb4S12S
S ChalcopyriteCuFeS2
S JarositeKFe3+ 3(SO4)2(OH)6
S GypsumCaSO4 · 2H2O
S FranckeiteFe2+(Pb,Sn2+)6Sn24+Sb2S14
S GalenaPbS
KPotassium
K JarositeKFe3+ 3(SO4)2(OH)6
CaCalcium
Ca FluoriteCaF2
Ca CalciteCaCO3
Ca GypsumCaSO4 · 2H2O
Ca AndraditeCa3Fe23+(SiO4)3
FeIron
Fe PyriteFeS2
Fe ChalcopyriteCuFeS2
Fe JarositeKFe3+ 3(SO4)2(OH)6
Fe FranckeiteFe2+(Pb,Sn2+)6Sn24+Sb2S14
Fe AndraditeCa3Fe23+(SiO4)3
CuCopper
Cu Tetrahedrite SubgroupCu6(Cu4C22+)Sb4S12S
Cu ChalcopyriteCuFeS2
Cu ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
ZnZinc
Zn SphaleriteZnS
SeSelenium
Se GuanajuatiteBi2Se3
SnTin
Sn FranckeiteFe2+(Pb,Sn2+)6Sn24+Sb2S14
SbAntimony
Sb Tetrahedrite SubgroupCu6(Cu4C22+)Sb4S12S
Sb FranckeiteFe2+(Pb,Sn2+)6Sn24+Sb2S14
PbLead
Pb FranckeiteFe2+(Pb,Sn2+)6Sn24+Sb2S14
Pb CerussitePbCO3
Pb GalenaPbS
BiBismuth
Bi GuanajuatiteBi2Se3

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Butner, D.W. (1949), Investigation of tungsten occurrences in Darwin district, Inyo County, California: US Bureau Mines Report of Investigation 4475: 5.
Norman, L.A. & Richard M. Stewart (1951), Mines and mineral resources of Inyo County, California: California Journal of Mines and Geology: 47(1): 59-68.
Goodwin, Joseph Grant (1957) Lead and zinc in California. California Journal of Mines and Geology, Division of Mines: 53(3&4): 466.
Hall, Wayne Everett & E.M. Mackevett (1958), Economic geology of the Darwin quadrangle, Inyo County, California: Calif Division of Mines Special Report 51, 77 pp.: 25-30, 37-40.
U.S. Bureau of Mines Minerals Yearbook (1972): 26, 30.
USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10188132.
Mineral Availability System (MAS) file #0060270687 (Darwin District Tungsten).

Other Databases

Link to USGS MRDS:10188132

External Links

http://www.projectdarwin.net/ (Status and History of Darwin Mines)

Other Regions, Features and Areas containing this locality

North America PlateTectonic Plate
USA

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