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Delmas Mine (Sweepstakes Mine; Delmas SW Mine; Como Mine), Nevada Bunker Hill Mines, Alladin group, Railroad District, Elko Co., Nevada, USAi
Regional Level Types
Delmas Mine (Sweepstakes Mine; Delmas SW Mine; Como Mine)Mine
Nevada Bunker Hill MinesGroup of Mines
Alladin group- not defined -
Railroad DistrictMining District
Elko Co.County
NevadaState
USACountry

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Key
Lock Map
Latitude & Longitude (WGS84): 40° 31' 0'' North , 116° 0' 52'' West
Latitude & Longitude (decimal): 40.51674,-116.01467
GeoHash:G#: 9rjw2pben
USGS MRDS Record:10045587
Locality type:Mine
Köppen climate type:BSk : Cold semi-arid (steppe) climate
Nearest Settlements:
PlacePopulationDistance
Carlin2,302 (2017)23.2km
Elko20,279 (2017)41.0km
Spring Creek12,361 (2011)43.0km


Part of the Alladin Group
Alteration: Silificion

Deposit: Tactite body at contact of granite porphyry with limestone also, some gold-bearing quartz veins. The delmas copper co., owner of several claims, developed their property by means of shallow pits and adits to explore the copper ore deposits in the tactite body which extends in a zone over 2000' long, and 125'-400' wide. Much of the early development was completed from 1906-1908. This activity resulted in the shipping of ore to the utah smelters. The sweepstakes claim is the most extensively explored. Ore shipped ran As high As 70 oz. Of silver, 10.4% copper, and 2.8% lead. The highest grade ore carries chalcocite coated sulphides ; info.src : 1 pub lit

Deposit type: Skarn Cu

Development: Early development took place 1906 to 1908, when ore was shipped to utah smelters

Geology: Some gold-bearing quartz veins occur in the granite porphyry

Ore(s): Intrusive Contact, Favorable Rocks

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


14 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:

Bornite
Formula: Cu5FeS4
Reference: NBMG Bull 106 Geology and Mineral Resources of Elko County, Nevada; USGS Open-File Report 76-56; USGS Bull 1162B; U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Chalcocite
Formula: Cu2S
Reference: NBMG Bull 106 Geology and Mineral Resources of Elko County, Nevada; USGS Open-File Report 76-56; USGS Bull 1162B; U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Chalcopyrite
Formula: CuFeS2
Reference: NBMG Bull 106 Geology and Mineral Resources of Elko County, Nevada; USGS Open-File Report 76-56; USGS Bull 1162B; U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Copper
Formula: Cu
Reference: U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
'Copper Stain'
Reference: USGS Bull 1162B
Diopside
Formula: CaMgSi2O6
Reference: USGS Open-File Report 76-56; U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Galena
Formula: PbS
Reference: NBMG Bull 106 Geology and Mineral Resources of Elko County, Nevada; USGS Open-File Report 76-56; USGS Bull 1162B; U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
'Garnet Group'
Formula: X3Z2(SiO4)3
Reference: USGS Bull 1162B; U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Gold
Formula: Au
Reference: NBMG Bull 106 Geology and Mineral Resources of Elko County, Nevada
'Limonite'
Formula: (Fe,O,OH,H2O)
Reference: NBMG Bull 106 Geology and Mineral Resources of Elko County, Nevada; USGS Bull 1162B
Pyrite
Formula: FeS2
Reference: USGS Open-File Report 76-56; USGS Bull 1162B; U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
'Pyroxene Group'
Reference: U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Pyrrhotite
Formula: Fe7S8
Reference: USGS Open-File Report 76-56; U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Quartz
Formula: SiO2
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.
Sphalerite
Formula: ZnS
Reference: NBMG Bull 106 Geology and Mineral Resources of Elko County, Nevada; USGS Open-File Report 76-56; USGS Bull 1162B; U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Tenorite
Formula: CuO
Reference: NBMG Bull 106 Geology and Mineral Resources of Elko County, Nevada
Tremolite
Formula: ☐{Ca2}{Mg5}(Si8O22)(OH)2
Reference: USGS Bull 1162B; U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
'Wad'
Reference: NBMG Bull 106 Geology and Mineral Resources of Elko County, Nevada
Zoisite
Formula: {Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Reference: U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Copper1.AA.05Cu
Gold1.AA.05Au
Group 2 - Sulphides and Sulfosalts
Bornite2.BA.15Cu5FeS4
Chalcocite2.BA.05Cu2S
Chalcopyrite2.CB.10aCuFeS2
Galena2.CD.10PbS
Pyrite2.EB.05aFeS2
Pyrrhotite2.CC.10Fe7S8
Sphalerite2.CB.05aZnS
Group 4 - Oxides and Hydroxides
Quartz4.DA.05SiO2
Tenorite4.AB.10CuO
Group 9 - Silicates
Diopside9.DA.15CaMgSi2O6
Tremolite9.DE.10☐{Ca2}{Mg5}(Si8O22)(OH)2
Zoisite9.BG.10{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Unclassified Minerals, Rocks, etc.
'Copper Stain'-
'Garnet Group'-X3Z2(SiO4)3
'Limonite'-(Fe,O,OH,H2O)
'Pyroxene Group'-
'Wad'-

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
Group 2 - SULFIDES
AmBnXp, with (m+n):p = 2:1
Chalcocite2.4.7.1Cu2S
AmBnXp, with (m+n):p = 3:2
Bornite2.5.2.1Cu5FeS4
AmXp, with m:p = 1:1
Galena2.8.1.1PbS
Pyrrhotite2.8.10.1Fe7S8
Sphalerite2.8.2.1ZnS
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 4 - SIMPLE OXIDES
AX
Tenorite4.2.3.1CuO
Group 58 - SOROSILICATES Insular, Mixed, Single, and Larger Tetrahedral Groups
Insular, Mixed, Single, and Larger Tetrahedral Groups with cations in [6] and higher coordination; single and double groups (n = 1, 2)
Zoisite58.2.1b.1{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=2
Diopside65.1.3a.1CaMgSi2O6
Group 66 - INOSILICATES Double-Width,Unbranched Chains,(W=2)
Amphiboles - Mg-Fe-Mn-Li subgroup
Tremolite66.1.3a.1☐{Ca2}{Mg5}(Si8O22)(OH)2
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
'Copper Stain'-
'Garnet Group'-X3Z2(SiO4)3
'Limonite'-(Fe,O,OH,H2O)
'Pyroxene Group'-
'Wad'-

List of minerals for each chemical element

HHydrogen
H Limonite(Fe,O,OH,H2O)
H Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
H Zoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
OOxygen
O QuartzSiO2
O TenoriteCuO
O Limonite(Fe,O,OH,H2O)
O Garnet GroupX3Z2(SiO4)3
O DiopsideCaMgSi2O6
O Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
O Zoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
MgMagnesium
Mg DiopsideCaMgSi2O6
Mg Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
AlAluminium
Al Zoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
SiSilicon
Si QuartzSiO2
Si Garnet GroupX3Z2(SiO4)3
Si DiopsideCaMgSi2O6
Si Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
Si Zoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
SSulfur
S ChalcopyriteCuFeS2
S BorniteCu5FeS4
S ChalcociteCu2S
S GalenaPbS
S SphaleriteZnS
S PyriteFeS2
S PyrrhotiteFe7S8
CaCalcium
Ca DiopsideCaMgSi2O6
Ca Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
Ca Zoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
FeIron
Fe Limonite(Fe,O,OH,H2O)
Fe ChalcopyriteCuFeS2
Fe BorniteCu5FeS4
Fe PyriteFeS2
Fe PyrrhotiteFe7S8
CuCopper
Cu TenoriteCuO
Cu ChalcopyriteCuFeS2
Cu BorniteCu5FeS4
Cu ChalcociteCu2S
Cu CopperCu
ZnZinc
Zn SphaleriteZnS
AuGold
Au GoldAu
PbLead
Pb GalenaPbS

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]

Miocene - Eocene
5.333 - 56 Ma



ID: 3025333
Felsic phaneritic intrusive rocks

Age: Cenozoic (5.333 - 56 Ma)

Description: Tertiary felsic intrusive rocks are widely scattered in every county across the State. They are generally described as granitic rocks, granodiorite, monzonite, quartz monzonite, alaskitic granite, quartz diorite, dacite, and rhyodacite in the places where they are shown separately on county maps.

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.

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)
Emmons, W. H., (1910), a Reconnassance of Some Mining Camps in Elko, Lander and Eurelsa Counties, Nevada: USGS Bulletin 408
Smith, R. M., Mineral Resources of Elko County, Nevada, USGS Open File Report (1976)-56


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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