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Dexter mine (Tuscarora mine), Tuscarora District, Elko Co., Nevada, USAi
Regional Level Types
Dexter mine (Tuscarora mine)Mine
Tuscarora DistrictMining District
Elko Co.County
NevadaState
USACountry

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Key
Lock Map
Latitude & Longitude (WGS84): 41° 18' 43'' North , 116° 13' 24'' West
Latitude & Longitude (decimal): 41.31210,-116.22343
GeoHash:G#: 9rm7528sm
USGS MRDS Record:10149197
Locality type:Mine
Köppen climate type:BSk : Cold semi-arid (steppe) climate


Deposit: Old Ag mine (dexter) has been removed by the open pit (tusca- rora). Operations stopped march 1990. See tuscarora mine operations seq #0320070968

Geology: Gold mineralization occurs within high-grade vein fillings, blanket-like quartz stockwork bodies, and placer deposits within unconsolidated stream gravels. Data compiled from USBM files and company annual reports.

Regions containing this locality

North America PlateTectonic Plate

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


6 valid minerals.

Detailed Mineral List:

Acanthite
Formula: Ag2S
Reference: NBMG Spec. Pub. 31 Minerals of Nevada
Argentojarosite
Formula: AgFe3+3(SO4)2(OH)6
Reference: NBMG Spec. Pub. 31 Minerals of Nevada
Gold
Formula: Au
Reference: NBMG Bull 106 Geology and Mineral Resources of Elko County, Nevada; USGS Open-File Report 76-56
'K Feldspar'
Reference: NBMG Bull 106 Geology and Mineral Resources of Elko County, Nevada; USGS Open-File Report 76-56
'K Feldspar var: Adularia'
Formula: KAlSi3O8
Reference: NBMG Bull 106 Geology and Mineral Resources of Elko County, Nevada; USGS Open-File Report 76-56
Pyrite
Formula: FeS2
Reference: NBMG Spec. Pub. 31 Minerals of Nevada
Quartz
Formula: SiO2
Reference: NBMG Bull 106 Geology and Mineral Resources of Elko County, Nevada; USGS Open-File Report 76-56
Silver
Formula: Ag
Reference: NBMG Spec. Pub. 31 Minerals of Nevada

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Gold1.AA.05Au
Silver1.AA.05Ag
Group 2 - Sulphides and Sulfosalts
Acanthite2.BA.35Ag2S
Pyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
Quartz4.DA.05SiO2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Argentojarosite7.BC.10AgFe3+3(SO4)2(OH)6
Unclassified Minerals, Rocks, etc.
'K Feldspar'-
'var: Adularia'-KAlSi3O8

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 30 - ANHYDROUS SULFATES CONTAINING HYDROXYL OR HALOGEN
(AB)2(XO4)Zq
Argentojarosite30.2.5.5AgFe3+3(SO4)2(OH)6
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
'K Feldspar'-
'var: Adularia'-KAlSi3O8

List of minerals for each chemical element

HHydrogen
H ArgentojarositeAgFe33+(SO4)2(OH)6
OOxygen
O QuartzSiO2
O K Feldspar (var: Adularia)KAlSi3O8
O ArgentojarositeAgFe33+(SO4)2(OH)6
AlAluminium
Al K Feldspar (var: Adularia)KAlSi3O8
SiSilicon
Si QuartzSiO2
Si K Feldspar (var: Adularia)KAlSi3O8
SSulfur
S PyriteFeS2
S ArgentojarositeAgFe33+(SO4)2(OH)6
S AcanthiteAg2S
KPotassium
K K Feldspar (var: Adularia)KAlSi3O8
FeIron
Fe PyriteFeS2
Fe ArgentojarositeAgFe33+(SO4)2(OH)6
AgSilver
Ag ArgentojarositeAgFe33+(SO4)2(OH)6
Ag AcanthiteAg2S
Ag SilverAg
AuGold
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: 2724354
Older silicic ash flow tuffs

Age: Paleogene (28.1 - 47.8 Ma)

Description: Welded and nonwelded silicic ash flow tuffs, locally includes thin units of air fall tuff and sedimentary rock. This unit corresponds with the 1978 State map unit Tt1. These rocks are present in northern Nye, Elko, Eureka, and White Pine Counties.

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:{felsic volcanic}, Minor:{sedimentary}

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

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Nev. Bureau of Mines Bulletin 25, (1936), P. 32-34.
U.S. Geological Survey Prof. Paper 610, (1968), P. 175.
Nev. Bureau of Mines Bulletin 54, (1957), P. 152, 163-165.


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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