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Boulder Hill Mine, Wellington, Silver Glance Mining District (Wellington Mining District), Wellington Hills, Douglas Co., Nevada, USAi
Regional Level Types
Boulder Hill MineMine
Wellington- not defined -
Silver Glance Mining District (Wellington Mining District)Mining District
Wellington HillsGroup of Hills
Douglas Co.County
NevadaState
USACountry

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Key
Latitude & Longitude (WGS84):
38° 41' 45'' North , 119° 20' 29'' West
Latitude & Longitude (decimal):
Locality type:
Nearest Settlements:
PlacePopulationDistance
Smith Valley1,603 (2011)9.8km
Smith1,033 (2006)11.7km
Topaz Ranch Estates1,501 (2017)14.5km
Topaz Lake157 (2011)17.6km
Coleville495 (2011)20.4km
Other/historical names associated with this locality:
Nevada Bureau of Mines and Geology (NBMG) sample site No. 4281


A former Ag-F-W occurrence/mine located in sec. 30, T10N, R24E, MDM, 7.3 km (4.5 miles) SSE of Wellington, on National Forest land. Owned by Saga Exploration Company, Reno, Nevada.

A Ag deposit hosted in limestone. The mine is best known because of 2 large fluorite-bearing jasperoid masses that crop out on the slope above the mine about 1,200 feet SW and 2,200 feet to the S. The jasperoid masses cap the lower units. Associated rocks include Late Jurassic Diorite. Local rocks include shale, sandstone, volcanogenic clastic rocks, andesite, rhyolite, and locally thick carbonate units.

Local geologic features include local faulting.

Workings include surface and underground openings comprised of a shaft and adit with extensive road building and bulldozing above and to the SW of the mine. Several old buildings still stand at the mine.

Production was a small amount of silver.

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


15 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:

Baryte
Formula: BaSO4
Reference: NBMG Spec. Pub. 31 Minerals of Nevada
Calcite
Formula: CaCO3
Reference: NBMG Spec. Pub. 31 Minerals of Nevada
Corkite
Formula: PbFe3(PO4)(SO4)(OH)6
Reference: NBMG Spec. Pub. 31 Minerals of Nevada
Coronadite
Formula: Pb(Mn4+6Mn3+2)O16
Reference: NBMG Spec. Pub. 31 Minerals of Nevada
Creedite
Formula: Ca3SO4Al2F8(OH)2 · 2H2O
Reference: NBMG Spec. Pub. 31 Minerals of Nevada
Fluorapatite
Formula: Ca5(PO4)3F
Habit: hexagonal prisms up to 0.5mm width and 1 mm length
Colour: clear, gemmy yellow
Reference: MarekC (2019) MSSC Fieldtrip Report. Yerington, NV, Sept 28, 2019. http://www.mineralsocal.org/fieldtrip-information-reports/yerington-area-nv-sept-28-2019/
Fluorite
Formula: CaF2
Reference: NBMG Bull 75 Geology and Mineral Deposits of Lyon, Douglas, and Ormsby Counties, Nevada
Gearksutite
Formula: Ca[Al(F,OH)5(H2O)]
Reference: NBMG Spec. Pub. 31 Minerals of Nevada
Hemimorphite
Formula: Zn4Si2O7(OH)2 · H2O
Reference: NBMG Spec. Pub. 31 Minerals of Nevada
Jarosite
Formula: KFe3+ 3(SO4)2(OH)6
Habit: microscopic balls on fluorite
Colour: sparkly yellow
Reference: MarekC (2019) MSSC Fieldtrip Report. Yerington, NV, Sept 28, 2019. http://www.mineralsocal.org/fieldtrip-information-reports/yerington-area-nv-sept-28-2019/
Pararealgar
Formula: As4S4
Reference: NBMG Spec. Pub. 31 Minerals of Nevada
Phosphosiderite
Formula: FePO4 · 2H2O
Habit: microscopic balls on baryte
Colour: pinkish white
Reference: MarekC pers. coll. 2015
Quartz
Formula: SiO2
Reference: NBMG Bull 75 Geology and Mineral Deposits of Lyon, Douglas, and Ormsby Counties, Nevada
Quartz var: Jasper
Reference: NBMG Bull 75 Geology and Mineral Deposits of Lyon, Douglas, and Ormsby Counties, Nevada
Realgar
Formula: As4S4
Reference: NBMG Spec. Pub. 31 Minerals of Nevada
Strengite
Formula: FePO4 · 2H2O
Habit: sparkly microscopic balls on baryte
Colour: pinkish white
Reference: MarekC pers. coll. 2015

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Pararealgar2.FA.15bAs4S4
Realgar2.FA.15aAs4S4
Group 3 - Halides
Creedite3.CG.15Ca3SO4Al2F8(OH)2 · 2H2O
Fluorite3.AB.25CaF2
Gearksutite3.CC.05Ca[Al(F,OH)5(H2O)]
Group 4 - Oxides and Hydroxides
Coronadite4.DK.05aPb(Mn4+6Mn3+2)O16
Quartz4.DA.05SiO2
var: Jasper4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Baryte7.AD.35BaSO4
Jarosite7.BC.10KFe3+3(SO4)2(OH)6
Group 8 - Phosphates, Arsenates and Vanadates
Corkite8.BL.05PbFe3(PO4)(SO4)(OH)6
Fluorapatite8.BN.05Ca5(PO4)3F
Phosphosiderite8.CD.05FePO4 · 2H2O
Strengite8.CD.10FePO4 · 2H2O
Group 9 - Silicates
Hemimorphite9.BD.10Zn4Si2O7(OH)2 · H2O

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmXp, with m:p = 1:1
Pararealgar2.8.21.2As4S4
Realgar2.8.21.1As4S4
Group 7 - MULTIPLE OXIDES
AB8X16
Coronadite7.9.1.4Pb(Mn4+6Mn3+2)O16
Group 9 - NORMAL HALIDES
AX2
Fluorite9.2.1.1CaF2
Group 11 - HALIDE COMPLEXES
Aluminofluorides - Isolated Octahedra
Gearksutite11.6.8.1Ca[Al(F,OH)5(H2O)]
Group 12 - COMPOUND HALIDES
Miscellaneous
Creedite12.1.4.1Ca3SO4Al2F8(OH)2 · 2H2O
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Group 28 - ANHYDROUS ACID AND NORMAL SULFATES
AXO4
Baryte28.3.1.1BaSO4
Group 30 - ANHYDROUS SULFATES CONTAINING HYDROXYL OR HALOGEN
(AB)2(XO4)Zq
Jarosite30.2.5.1KFe3+ 3(SO4)2(OH)6
Group 40 - HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
(AB)5(XO4)2·xH2O
Phosphosiderite40.4.3.2FePO4 · 2H2O
Strengite40.4.1.2FePO4 · 2H2O
Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
A5(XO4)3Zq
Fluorapatite41.8.1.1Ca5(PO4)3F
Group 43 - COMPOUND PHOSPHATES, ETC.
Anhydrous Compound Phosphates, etc·, Containing Hydroxyl or Halogen
Corkite43.4.1.2PbFe3(PO4)(SO4)(OH)6
Group 56 - SOROSILICATES Si2O7 Groups, With Additional O, OH, F and H2O
Si2O7 Groups and O, OH, F, and H2O with cations in [4] coordination
Hemimorphite56.1.2.1Zn4Si2O7(OH)2 · H2O
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
var: Jasper-SiO2

List of minerals for each chemical element

HHydrogen
H CreediteCa3SO4Al2F8(OH)2 · 2H2O
H CorkitePbFe3(PO4)(SO4)(OH)6
H HemimorphiteZn4Si2O7(OH)2 · H2O
H GearksutiteCa[Al(F,OH)5(H2O)]
H StrengiteFePO4 · 2H2O
H PhosphosideriteFePO4 · 2H2O
H JarositeKFe3+ 3(SO4)2(OH)6
CCarbon
C CalciteCaCO3
OOxygen
O CreediteCa3SO4Al2F8(OH)2 · 2H2O
O CalciteCaCO3
O BaryteBaSO4
O CorkitePbFe3(PO4)(SO4)(OH)6
O HemimorphiteZn4Si2O7(OH)2 · H2O
O CoronaditePb(Mn64+Mn23+)O16
O GearksutiteCa[Al(F,OH)5(H2O)]
O QuartzSiO2
O StrengiteFePO4 · 2H2O
O PhosphosideriteFePO4 · 2H2O
O JarositeKFe3+ 3(SO4)2(OH)6
O FluorapatiteCa5(PO4)3F
FFluorine
F CreediteCa3SO4Al2F8(OH)2 · 2H2O
F FluoriteCaF2
F GearksutiteCa[Al(F,OH)5(H2O)]
F FluorapatiteCa5(PO4)3F
AlAluminium
Al CreediteCa3SO4Al2F8(OH)2 · 2H2O
Al GearksutiteCa[Al(F,OH)5(H2O)]
SiSilicon
Si HemimorphiteZn4Si2O7(OH)2 · H2O
Si QuartzSiO2
PPhosphorus
P CorkitePbFe3(PO4)(SO4)(OH)6
P StrengiteFePO4 · 2H2O
P PhosphosideriteFePO4 · 2H2O
P FluorapatiteCa5(PO4)3F
SSulfur
S CreediteCa3SO4Al2F8(OH)2 · 2H2O
S BaryteBaSO4
S RealgarAs4S4
S CorkitePbFe3(PO4)(SO4)(OH)6
S PararealgarAs4S4
S JarositeKFe3+ 3(SO4)2(OH)6
KPotassium
K JarositeKFe3+ 3(SO4)2(OH)6
CaCalcium
Ca CreediteCa3SO4Al2F8(OH)2 · 2H2O
Ca CalciteCaCO3
Ca FluoriteCaF2
Ca GearksutiteCa[Al(F,OH)5(H2O)]
Ca FluorapatiteCa5(PO4)3F
MnManganese
Mn CoronaditePb(Mn64+Mn23+)O16
FeIron
Fe CorkitePbFe3(PO4)(SO4)(OH)6
Fe StrengiteFePO4 · 2H2O
Fe PhosphosideriteFePO4 · 2H2O
Fe JarositeKFe3+ 3(SO4)2(OH)6
ZnZinc
Zn HemimorphiteZn4Si2O7(OH)2 · H2O
AsArsenic
As RealgarAs4S4
As PararealgarAs4S4
BaBarium
Ba BaryteBaSO4
PbLead
Pb CorkitePbFe3(PO4)(SO4)(OH)6
Pb CoronaditePb(Mn64+Mn23+)O16

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Quade, Jack (1989), Boulder Hill Mine, Wellington District, Douglas County, Sample site visit 6/30/1989, Nevada Bureau of Mines and Geology, unpublished mining district files (Tingley files).
Castor, S.B. and Ferdock, G.C. (2004), Minerals of Nevada, Nevada Bureau of Mines and Geology, Special Publication 31.
Moore, James G. (1969), Nevada Bureau of Mines and Geology, Geology and Mineral Deposits of Lyon, Douglas, and Ormsby Counties, Nevada, Bulletin 75.
USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10103623.
USGS MRDS ID #M035946.

Other Databases

USGS MRDS Record:10103623

Other Regions, Features and Areas containing this locality

North America PlateTectonic Plate
USA

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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