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Star mine, Imlay Mining District, Pershing County, Nevada, USAi
Regional Level Types
Star mineMine
Imlay Mining DistrictMining District
Pershing CountyCounty
NevadaState
USACountry

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Latitude & Longitude (WGS84):
40° 31' 37'' North , 118° 13' 59'' West
Latitude & Longitude (decimal):
40.52711,-118.23320
GeoHash:
G#: 9r5yt99pw
GRN:
N28W64
Type:
Mine
Köppen climate type:
BSk : Cold semi-arid (steppe) climate
Nearest Settlements:
PlacePopulationDistance
Humboldt119 (2011)8.6km
Imlay171 (2011)16.4km
Lovelock1,878 (2017)43.7km
Winnemucca7,887 (2017)64.9km
Mindat Locality ID:
58246
Long-form identifier:
mindat:1:2:58246:4
GUID (UUID V4):
0


Sec 26 T31N R33E
Structure: Cross Faults

Alteration: Limestone Has Been Recrystallized. Dikes Completely Altered To Carbonates, Chlorite, And Clay.

Deposit: Workings include a number of adits and shafts. Most of t scheelite mined came from the lower adits and does not occur with stibnite. Stibnite and small amounts of tetrahedrite occur in the upper adit. Diabase dikes intrude the limestone in the area. ; info.src : 1 pub lit; 2 unpub rept; 3 field observ the lower adit contains scheelite; the upper stibnite and tetrabedrite. Scheelite is in large masses, 1 to 3 inch quartz veins and minor scheelite is disseminated in the limestone. Stibnite and small amounts tetrahedrite occur in quartz veins in or near diabase dikes. Dikes have been completely altered to carbonates, chlorite, and clay..tungsten mineralization occurs in quartz-filled fault breccia zone As pipe-like shoots. In a strike distance of about 150 ft, 3 small ore shoots were mined from 2 raises and a winze. These ore shoots were 20-40 ft long, 4-10 ft wide, and- 1-4 ft thick. Some ag, Au and cu occur with the antimony minerals in the upper workings, but scheelite was found only in the lower workings. One quartz vein in upper adits trends n60-70-w, dips n, up to 5 m thick, intersected by a second vein of about the same width, striking n15-20e, dip steeply west; both veins brecciated and recemented. Most vein quartz appears barren.; model name could also be: polymetallic veins.

Deposit type: Low-sulfide Au-quartz vein

Development: Originally a Ag-pb-cu prospect, the property was not mined for tungsten until the early 1940's. It produced tungsten in 1944, 1953-1956, since which time it has been idle except for numerous recent claims staked over the area (1984).

Geology: Geol.com: scheelite is in large masses 1 to 3 in. In quartz veins and minor scheelite is disseminated in the limestone. Stibnite and small amounts tetrahedrite occur in quartz veins in or near diabae dikes. Dikes have been completely altered to carbonates, chlorite, and clay.

Rock formation(s): Natchez Pass Formation


Ore(s): Scheelite Occurs Near Intersection Of Small Cross Faults

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Standard Detailed Gallery Strunz Chemical Elements

Commodity List

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


Mineral List


8 valid minerals.

Rock Types Recorded

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

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Alphabetical List Tree Diagram

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘSphalerite2.CB.05aZnS
ⓘStibnite2.DB.05Sb2S3
ⓘPyrite2.EB.05aFeS2
ⓘ'Tetrahedrite Subgroup'2.GB.05Cu6(Cu4C2+2)Sb4S12S
Group 4 - Oxides and Hydroxides
ⓘQuartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
ⓘMalachite5.BA.10Cu2(CO3)(OH)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘScheelite7.GA.05Ca(WO4)
Group 9 - Silicates
ⓘHemimorphite9.BD.10Zn4Si2O7(OH)2 · H2O

List of minerals for each chemical element

HHydrogen
Hⓘ HemimorphiteZn4Si2O7(OH)2 · H2O
Hⓘ MalachiteCu2(CO3)(OH)2
CCarbon
Cⓘ CalciteCaCO3
Cⓘ MalachiteCu2(CO3)(OH)2
OOxygen
Oⓘ CalciteCaCO3
Oⓘ HemimorphiteZn4Si2O7(OH)2 · H2O
Oⓘ MalachiteCu2(CO3)(OH)2
Oⓘ QuartzSiO2
Oⓘ ScheeliteCa(WO4)
SiSilicon
Siⓘ HemimorphiteZn4Si2O7(OH)2 · H2O
Siⓘ QuartzSiO2
SSulfur
Sⓘ PyriteFeS2
Sⓘ SphaleriteZnS
Sⓘ StibniteSb2S3
Sⓘ Tetrahedrite SubgroupCu6(Cu4C22+)Sb4S12S
CaCalcium
Caⓘ CalciteCaCO3
Caⓘ ScheeliteCa(WO4)
FeIron
Feⓘ PyriteFeS2
CuCopper
Cuⓘ MalachiteCu2(CO3)(OH)2
Cuⓘ Tetrahedrite SubgroupCu6(Cu4C22+)Sb4S12S
ZnZinc
Znⓘ HemimorphiteZn4Si2O7(OH)2 · H2O
Znⓘ SphaleriteZnS
SbAntimony
Sbⓘ StibniteSb2S3
Sbⓘ Tetrahedrite SubgroupCu6(Cu4C22+)Sb4S12S
WTungsten
Wⓘ ScheeliteCa(WO4)

Other Databases

Link to USGS MRDS:10042512

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

Lawrence, (1963), Antimony Deposits of Nevada; NBMG Bull. 61
Johnson, Maureen G. (1977) Geology and Mineral Resources of Pershing County, Nevada. Bulletin 89. Nevada Bureau of Mines
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