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Railroad Copper-Gold Property (Bullion Copper-Gold Project; Polymetallic prospect; Nevada Bunker Hill Mines; Aladdin Claim; Blue Sky Claim; Tripoli Claim; Webfoot Claim; Mahogany Claim; Standing Elk Claim; Hoffman Claim; Mounted Ledge Claim; Bullion Claim; Cleveland Claim; Portal Claim), Railroad Mining District, Elko Co., Nevada, USAi
Regional Level Types
Railroad Copper-Gold Property (Bullion Copper-Gold Project; Polymetallic prospect; Nevada Bunker Hill Mines; Aladdin Claim; Blue Sky Claim; Tripoli Claim; Webfoot Claim; Mahogany Claim; Standing Elk Claim; Hoffman Claim; Mounted Ledge Claim; Bullion Claim; Cleveland Claim; Portal Claim)- not defined -
Railroad Mining DistrictMining District
Elko Co.County
NevadaState
USACountry

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Key
Latitude & Longitude (WGS84):
40° 30' 59'' North , 116° 0' 38'' West
Latitude & Longitude (decimal):
Nearest Settlements:
PlacePopulationDistance
Carlin2,302 (2017)23.3km
Elko20,279 (2017)40.8km
Spring Creek12,361 (2011)42.8km


Structure: North- to northeast-trending Bunker Hill fault; E-W-trending Bald Mountain fault

Alteration: sericitization, silicification

Commodity: Ore Materials: malachite, chalcanthite, cerussite, cerargyrite, duftite, copper pitch, azurite, galena, bornite, chalcopyrite, sphalerite, chalcocite, tetrahedrite, scheelite, pyromorphite Gangue Materials: calcite, garnet, tremolite, quartz, fluorite, wollastonite, halloysite, pyrite, barite

Deposit: The ore occurs as pipe-like replacements in marbelized limestone along porphyry dikes at intersections with faults. The largest mass was 50 feet in diameter and extended vertically for 400 feet and yielded 50,000 tons of oxidized ore grading 18.2% lead, 5.4% copper, and 19 oz of silver per ton. Scheelite-bearing tactite 2-3-feet wide occurs in the Davis tunnel about 3000 feet from the portal. In some areas, chimneys of high-grade silver-lead ore occur at fissure intersections and shear zones.

Deposit type: Skarn Cu

Development: The original Bunker Hill mines were discovered in the1870s, with early ore treated in a small smelter erected at Bullion City. The mine originally opened on 7 levels with the 'low level' adit (Davis tunnel) the main access. Production continued until 1887, then ceased until 1905 when the Nevada Bunker Hill Mining Co. consolidated the area mines and 2 low level adits were begun at the new camp of Bullion, to explore the downward extension of the orebodies. The property was operated during the 1930s by the Aladdin Mines Co. The Davis tunnel was extended to a target length of 6,040 feet in 1959, in an attempt to reach a projected extension of the Standing Elk orebody but no ore was found. Later the Webfoot Adit shared the same dump and portal area and was extended to 900 feet, with several hundred feet of crosscuts. The Standing Elk has over 10,000 feet of workings, and was one of the major producers of the district, with most of the intermittent production since 1908 to its credit. The Railroad/Bullion District has seen many periods of subsequent exploration for a variety of commodities. The most recent owner is Royal Standard Minerals who in 2006 is explorijng the property as a copper-gold polymetallic prospect. At the end of 2006, RSM reported that a geologic field mapping and geophysics program was completed during October and November 2006 on the Railroad copper-skarn system. The alteration mapping and a large ground magnetics program provided very useful data in targeting future drill hole sites on the property. The geophysical interpretation of this data is underway. No drilling was completed in October and November on this property due to delays with the availability of a drill, weather and the need to complete the evaluation of the new geophysical and geologic data. The drilling program is now rescheduled for the spring of 2007.

Ore(s): Ore is localized by proximity of favorable reactive host rocks to intrusives, coupled with fault intersections.

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


20 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:

Azurite
Formula: Cu3(CO3)2(OH)2
Reference: U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Baryte
Formula: BaSO4
Reference: U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Bornite
Formula: Cu5FeS4
Reference: U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Calcite
Formula: CaCO3
Reference: U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Cerussite
Formula: PbCO3
Reference: U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Chalcanthite
Formula: CuSO4 · 5H2O
Reference: U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Chalcocite
Formula: Cu2S
Reference: U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Chalcopyrite
Formula: CuFeS2
Reference: U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Chlorargyrite
Formula: AgCl
Reference: U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Duftite
Formula: PbCu(AsO4)(OH)
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.
Galena
Formula: PbS
Reference: U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
'Garnet Group'
Formula: X3Z2(SiO4)3
Reference: U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
'Halloysite'
Formula: Al2(Si2O5)(OH)4
Reference: U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Malachite
Formula: Cu2(CO3)(OH)2
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.
Pyromorphite
Formula: Pb5(PO4)3Cl
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.
Scheelite
Formula: Ca(WO4)
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'
Formula: Cu6(Cu4X2)Sb4S13
Reference: U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Tremolite
Formula: ☐{Ca2}{Mg5}(Si8O22)(OH)2
Reference: U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Wollastonite
Formula: CaSiO3
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 2 - Sulphides and Sulfosalts
Bornite2.BA.15Cu5FeS4
Chalcocite2.BA.05Cu2S
Chalcopyrite2.CB.10aCuFeS2
Galena2.CD.10PbS
Pyrite2.EB.05aFeS2
Sphalerite2.CB.05aZnS
'Tetrahedrite'2.GB.05Cu6(Cu4X2)Sb4S13
Group 3 - Halides
Chlorargyrite3.AA.15AgCl
Fluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Azurite5.BA.05Cu3(CO3)2(OH)2
Calcite5.AB.05CaCO3
Cerussite5.AB.15PbCO3
Malachite5.BA.10Cu2(CO3)(OH)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Baryte7.AD.35BaSO4
Chalcanthite7.CB.20CuSO4 · 5H2O
Scheelite7.GA.05Ca(WO4)
Group 8 - Phosphates, Arsenates and Vanadates
Duftite8.BH.35PbCu(AsO4)(OH)
Pyromorphite8.BN.05Pb5(PO4)3Cl
Group 9 - Silicates
'Halloysite'9.ED.10Al2(Si2O5)(OH)4
Tremolite9.DE.10☐{Ca2}{Mg5}(Si8O22)(OH)2
Wollastonite9.DG.05CaSiO3
Unclassified Minerals, Rocks, etc.
'Garnet Group'-X3Z2(SiO4)3

List of minerals arranged by Dana 8th Edition classification

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
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 3 - SULFOSALTS
3 <ø < 4
'Tetrahedrite'3.3.6.1Cu6(Cu4X2)Sb4S13
Group 9 - NORMAL HALIDES
AX
Chlorargyrite9.1.4.1AgCl
AX2
Fluorite9.2.1.1CaF2
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Cerussite14.1.3.4PbCO3
Group 16a - ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
Azurite16a.2.1.1Cu3(CO3)2(OH)2
Malachite16a.3.1.1Cu2(CO3)(OH)2
Group 28 - ANHYDROUS ACID AND NORMAL SULFATES
AXO4
Baryte28.3.1.1BaSO4
Group 29 - HYDRATED ACID AND NORMAL SULFATES
AXO4·xH2O
Chalcanthite29.6.7.1CuSO4 · 5H2O
Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
(AB)2(XO4)Zq
Duftite41.5.1.4PbCu(AsO4)(OH)
A5(XO4)3Zq
Pyromorphite41.8.4.1Pb5(PO4)3Cl
Group 48 - ANHYDROUS MOLYBDATES AND TUNGSTATES
AXO4
Scheelite48.1.2.1Ca(WO4)
Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=3
Wollastonite65.2.1.1cCaSiO3
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 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 1:1 layers
'Halloysite'71.1.1.4Al2(Si2O5)(OH)4
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
'Garnet Group'-X3Z2(SiO4)3

List of minerals for each chemical element

HHydrogen
H MalachiteCu2(CO3)(OH)2
H ChalcanthiteCuSO4 · 5H2O
H DuftitePbCu(AsO4)(OH)
H AzuriteCu3(CO3)2(OH)2
H Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
H HalloysiteAl2(Si2O5)(OH)4
CCarbon
C MalachiteCu2(CO3)(OH)2
C CerussitePbCO3
C AzuriteCu3(CO3)2(OH)2
C CalciteCaCO3
OOxygen
O MalachiteCu2(CO3)(OH)2
O ChalcanthiteCuSO4 · 5H2O
O CerussitePbCO3
O DuftitePbCu(AsO4)(OH)
O AzuriteCu3(CO3)2(OH)2
O ScheeliteCa(WO4)
O PyromorphitePb5(PO4)3Cl
O CalciteCaCO3
O Garnet GroupX3Z2(SiO4)3
O Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
O QuartzSiO2
O WollastoniteCaSiO3
O HalloysiteAl2(Si2O5)(OH)4
O BaryteBaSO4
FFluorine
F FluoriteCaF2
MgMagnesium
Mg Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
AlAluminium
Al HalloysiteAl2(Si2O5)(OH)4
SiSilicon
Si Garnet GroupX3Z2(SiO4)3
Si Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
Si QuartzSiO2
Si WollastoniteCaSiO3
Si HalloysiteAl2(Si2O5)(OH)4
PPhosphorus
P PyromorphitePb5(PO4)3Cl
SSulfur
S ChalcanthiteCuSO4 · 5H2O
S GalenaPbS
S BorniteCu5FeS4
S ChalcopyriteCuFeS2
S SphaleriteZnS
S ChalcociteCu2S
S TetrahedriteCu6(Cu4X2)Sb4S13
S PyriteFeS2
S BaryteBaSO4
ClChlorine
Cl ChlorargyriteAgCl
Cl PyromorphitePb5(PO4)3Cl
CaCalcium
Ca ScheeliteCa(WO4)
Ca CalciteCaCO3
Ca Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
Ca FluoriteCaF2
Ca WollastoniteCaSiO3
FeIron
Fe BorniteCu5FeS4
Fe ChalcopyriteCuFeS2
Fe PyriteFeS2
CuCopper
Cu MalachiteCu2(CO3)(OH)2
Cu ChalcanthiteCuSO4 · 5H2O
Cu DuftitePbCu(AsO4)(OH)
Cu AzuriteCu3(CO3)2(OH)2
Cu BorniteCu5FeS4
Cu ChalcopyriteCuFeS2
Cu ChalcociteCu2S
Cu TetrahedriteCu6(Cu4X2)Sb4S13
ZnZinc
Zn SphaleriteZnS
AsArsenic
As DuftitePbCu(AsO4)(OH)
AgSilver
Ag ChlorargyriteAgCl
SbAntimony
Sb TetrahedriteCu6(Cu4X2)Sb4S13
BaBarium
Ba BaryteBaSO4
WTungsten
W ScheeliteCa(WO4)
PbLead
Pb CerussitePbCO3
Pb DuftitePbCu(AsO4)(OH)
Pb GalenaPbS
Pb PyromorphitePb5(PO4)3Cl

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Ketner, K.B., and Smith, Jr., J.F., Geology of the Railroad Mining District, Elko County, Nevada. USGS Bulletin (1162)-B
Smith, R.M., Mineral Resources of Elko County, Nevada, USGS Open File Report, (1976)-56
Granger, A.E., et al., (1957), Geology and Mineral Resources of Elko County, Nevada, NBMG Bulletin 54
Emmons, W.H., (1910), A Reconnaissance of some Mining Camps of Elko, Lander, and Eureka Counties, Nevada. USGS Bulletin 408.
Mines Register, (1937).
La Pointe and others, (1991), NBMG Bull. 106
Long, K.R., DeYoung, J.H., Jr., and Ludington, S.D., (1998), Significant deposits of gold, silver, copper, lead, and zinc in the United States: U.S. Geological Survey Open-File Report 90-206A, 33 p.; 98-206B. one 3.5 inch diskette.
Royal Standard Minerals website, (2006) http://www.royalstandardminerals.com/

Other Databases

USGS MRDS Record:10310317

Other Regions, Features and Areas containing this locality

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.
 
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