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Grand Prize mine, Tuscarora District, Elko Co., Nevada, USA

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Latitude & Longitude (WGS84): 41° 19' 2'' North , 116° 13' 6'' West
Latitude & Longitude (decimal): 41.31740,-116.21843
GeoHash:G#: 9rm753s76
Locality type:Mine
Köppen climate type:BSk : Cold semi-arid (steppe) climate


Structure: East-Striking Faults, Conjugate To A Set Of Northwest-Striking Faults.

Alteration: Early Propylitic, And Inner Potassic Zones

Deposit: Best ore shoots formed at intersections of fissures. Ore minerals were native silver, horn silver & silver sulphides typical bonanza type epithermal vein deposit. One of the largest mines in the district, the majority of production took place prior to 1895. The depth of the workings extended 750 ft. Belo W the surface ; info.src : 1 pub lit

Deposit type: Epithermal vein, Comstock

Development: One of the largest bonanza-type epithermal vein deposits in the district most production was prior to 1895

Geology: The best ore shoots pitched northward along the intersections of fissures

Ore(s): Intersections Of Fissures

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Commodity List

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


Mineral List


10 valid minerals.

Rock Types Recorded

Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

Acanthite
Formula: Ag2S
Reference: NBMG Bull 106 Geology and Mineral Resources of Elko County, Nevada
'Andesite'
Reference: U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Chlorargyrite
Formula: AgCl
Reference: NBMG Bull 106 Geology and Mineral Resources of Elko County, Nevada
'Electrum'
Formula: (Au, Ag)
Reference: NBMG Spec. Pub. 31 Minerals of Nevada
Gold
Formula: Au
Reference: NBMG Spec. Pub. 31 Minerals of Nevada
'Limonite'
Formula: (Fe,O,OH,H2O)
Reference: NBMG Bull 106 Geology and Mineral Resources of Elko County, Nevada
Pyrargyrite
Formula: Ag3SbS3
Reference: NBMG Spec. Pub. 31 Minerals of Nevada
Pyrite
Formula: FeS2
Reference: NBMG Bull 106 Geology and Mineral Resources of Elko County, Nevada
Quartz
Formula: SiO2
Reference: NBMG Bull 106 Geology and Mineral Resources of Elko County, Nevada
Siderite
Formula: FeCO3
Reference: NBMG Spec Pub 31 Minerals of Nevada
Silver
Formula: Ag
Reference: NBMG Bull 106 Geology and Mineral Resources of Elko County, Nevada; U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
'commodity:Silver'
Formula: Ag
Reference:  
Stephanite
Formula: Ag5SbS4
Reference: NBMG Spec. Pub. 31 Minerals of Nevada
Tetrahedrite
Formula: Cu6[Cu4(Fe,Zn)2]Sb4S13
Reference: NBMG Spec Pub 31 Minerals of Nevada

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
'Electrum'1.AA.05(Au, Ag)
'Gold'1.AA.05Au
'Silver'1.AA.05Ag
Group 2 - Sulphides and Sulfosalts
'Acanthite'2.BA.35Ag2S
'Pyrargyrite'2.GA.05Ag3SbS3
'Pyrite'2.EB.05aFeS2
'Stephanite'2.GB.10Ag5SbS4
'Tetrahedrite'2.GB.05Cu6[Cu4(Fe,Zn)2]Sb4S13
Group 3 - Halides
'Chlorargyrite'3.AA.15AgCl
Group 4 - Oxides and Hydroxides
'Quartz'4.DA.05SiO2
Group 5 - Nitrates and Carbonates
'Siderite'5.AB.05FeCO3
Unclassified Minerals, Rocks, etc.
'Andesite'-
'Limonite'-(Fe,O,OH,H2O)

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Gold1.1.1.1Au
Silver1.1.1.2Ag
Group 2 - SULFIDES
AmBnXp, with (m+n):p = 2:1
Acanthite2.4.1.1Ag2S
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 3 - SULFOSALTS
ø = 4
Stephanite3.2.4.1Ag5SbS4
3 <ø < 4
Tetrahedrite3.3.6.1Cu6[Cu4(Fe,Zn)2]Sb4S13
ø = 3
Pyrargyrite3.4.1.2Ag3SbS3
Group 9 - NORMAL HALIDES
AX
Chlorargyrite9.1.4.1AgCl
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Siderite14.1.1.3FeCO3
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Rocks, etc.
'Andesite'-
'Electrum'-(Au, Ag)
'Limonite'-(Fe,O,OH,H2O)

List of minerals for each chemical element

HHydrogen
H Limonite(Fe,O,OH,H2O)
CCarbon
C SideriteFeCO3
OOxygen
O Limonite(Fe,O,OH,H2O)
O QuartzSiO2
O SideriteFeCO3
SiSilicon
Si QuartzSiO2
SSulfur
S AcanthiteAg2S
S PyrargyriteAg3SbS3
S PyriteFeS2
S StephaniteAg5SbS4
S TetrahedriteCu6[Cu4(Fe,Zn)2]Sb4S13
ClChlorine
Cl ChlorargyriteAgCl
FeIron
Fe Limonite(Fe,O,OH,H2O)
Fe PyriteFeS2
Fe SideriteFeCO3
Fe TetrahedriteCu6[Cu4(Fe,Zn)2]Sb4S13
CuCopper
Cu TetrahedriteCu6[Cu4(Fe,Zn)2]Sb4S13
ZnZinc
Zn TetrahedriteCu6[Cu4(Fe,Zn)2]Sb4S13
AgSilver
Ag AcanthiteAg2S
Ag ChlorargyriteAgCl
Ag Electrum(Au, Ag)
Ag PyrargyriteAg3SbS3
Ag SilverAg
Ag StephaniteAg5SbS4
SbAntimony
Sb PyrargyriteAg3SbS3
Sb StephaniteAg5SbS4
Sb TetrahedriteCu6[Cu4(Fe,Zn)2]Sb4S13
AuGold
Au Electrum(Au, Ag)
Au GoldAu

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Quaternary - Miocene
0 - 23.03 Ma



ID: 3185380
Cenozoic sedimentary rocks

Age: Cenozoic (0 - 23.03 Ma)

Lithology: Sedimentary rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Early Oligocene - Middle Eocene
28.1 - 47.8 Ma



ID: 2856742
Older andesite and intermediate flows and breccias

Age: Paleogene (28.1 - 47.8 Ma)

Description: Unit includes andesite or dacite flows, flow breccias, and hypabyssal rocks in Lander County, andesitic to latitic flows, pyroclastic rocks, and phenoandesitic and phenolatitic flows in Elko County, and other undifferentiated volcanic rocks in other counties. Present in Humboldt, northern Nye, Churchill, Elko, Eureka, Lander, and White Pine Counties. It corresponds to the 1978 State map unit Ta1.

Comments: Original map source: Crafford, A.E.J., 2007, Geologic Map of Nevada: U.S. Geological Survey Data Series 249, 1 CD-ROM, 46 p., 1 plate; Scale 1:250,000.

Lithology: Major:{andesite,dacite}, Minor:{hypabyssal,latite,volcanic}

Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052. [133]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License


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