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Willard Mine, Willard Mining District, Humboldt Range, Pershing County, Nevada, USAi
Regional Level Types
Willard MineMine
Willard Mining DistrictMining District
Humboldt RangeMountain Range
Pershing CountyCounty
NevadaState
USACountry

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Latitude & Longitude (WGS84):
40° 15' 28'' North , 118° 20' 40'' West
Latitude & Longitude (decimal):
Type:
KΓΆppen climate type:
Nearest Settlements:
PlacePopulationDistance
Lovelock1,878 (2017)14.0km
Humboldt119 (2011)39.2km
Imlay171 (2011)47.7km
Mindat Locality ID:
6916
Long-form identifier:
mindat:1:2:6916:1
GUID (UUID V4):
7bb67e13-b0ee-4804-ac2b-9550cd032ac5
Other/historical names associated with this locality:
Honey Bee Nose Pit; Section Line pit; South pit; South West pit; Willard Draw pit; Willard Hill pit


Located in sec. 25 & 26, 35-36, T28N, R32E, MDM.

Structure: Basin and Range faulting Vertical shear zone

Alteration: Wall rock is bleached and kaolinized

Commodity: Ore Materials: free gold Gangue Materials: quartz, iron oxides, pyrite, Mn oxide, hematite, variscite, fluellite, wavellite

Deposit: The northern portion of the deposit consisted of a stockwork network of quartz veinlets in limestone at and near the contact with underlying rhyolite. Mineralization is also present in brecciated rhyolite close to basalt dikes. There is a zone up to 2 meters wide of anastomosing quartz and calcite veinlets and stringers that dips 50-55W. There is some hydrothermal breccia with abundant pyrite. Late-stage green fluorite and very late baryte are present. Pyrite is the only visible sulfide mineral. Ore consisted of free-milling gold and silver in copper-stained quartz veins. In the southern portion of the deposit are a number of E-W-trending hydrofractured breccia zones with anastomosing quartz veinlets cutting interbedded phyllite and sandstone, with iron oxides after pyrite. The quartz is well crystallized, commonly vuggy, with crystals forming rosettes around breccia fragments. There is a quartz vein with breccia and jasperoid along the shear zone. There is an extensive stockwork zone of veins, silicification, and iron-staining in phyllite. Ore is controlled by a vertical shear zone.

Deposit type: Epithermal vein, Comstock

Development: The historic antimony mines in the area were worked from about 1915 until about 1950. The area was explored for gold deposits beginning in the 1970s, and several drilling programs were active in the area. Western States Minerals Corporation discovered a mineable gold deposit in the 1980s. The Willard deposit of Western States Minerals Corporation was placed into production in May 1990, and was reportedly mined out by 1993, but production amount was not reported. In 1997, in the Willard district, Easton Minerals elected to proceed with the second year of an exploration agreement on its Colado gold-silver property after obtaining encouraging results from the first phase of drilling. Previous work on the project by owner Santa Fe Pacific Gold Corp. indicated an oxide gold resource of 15 million tons, grading 0.022 opt. Easton Minerals, Ltd. still owned the property in 1999, but later dropped the property. The exact location of the Colado deposit is unknown, but it is thought to be near (within a mile or two) of the Willard Mine area.

Ore(s): Ore is controlled by a vertical shear zone

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

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


Mineral List


31 valid minerals.

Rock Types Recorded

Note: 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:

β“˜ Anglesite
Formula: PbSO4
β“˜ Baryte
Formula: BaSO4
β“˜ Brochantite
Formula: Cu4(SO4)(OH)6
βœͺ Cacoxenite
Formula: Fe3+24AlO6(PO4)17(OH)12 · 75H2O
β“˜ Calcite
Formula: CaCO3
β“˜ Cerussite
Formula: PbCO3
β“˜ 'Copper Stain'
β“˜ Crandallite
Formula: CaAl3(PO4)(PO3OH)(OH)6
β“˜ DufrΓ©nite
Formula: Ca0.5Fe2+Fe3+5(PO4)4(OH)6 · 2H2O
βœͺ Fluellite
Formula: Al2(PO4)F2(OH) · 7H2O
β“˜ Fluorwavellite
Formula: Al3(PO4)2(OH)2F · 5H2O
β“˜ Galena
Formula: PbS
β“˜ 'Garnet Group'
Formula: X3Z2(SiO4)3
β“˜ Goethite
Formula: Ξ±-Fe3+O(OH)
β“˜ Gold
Formula: Au
βœͺ Gypsum
Formula: CaSO4 · 2H2O
β“˜ Hematite
Formula: Fe2O3
β“˜ Jarosite
Formula: KFe3+3(SO4)2(OH)6
β“˜ Kaolinite
Formula: Al2(Si2O5)(OH)4
β“˜ Metavariscite
Formula: AlPO4 · 2H2O
β“˜ Meurigite-K
Formula: KFe3+8(PO4)6(OH)7 · 6.5H2O
β“˜ Mimetite
Formula: Pb5(AsO4)3Cl
References:
βœͺ Minyulite
Formula: KAl2(PO4)2F · 4H2O
β“˜ Montgomeryite
Formula: Ca4MgAl4(PO4)6(OH)4 · 12H2O
β“˜ Pharmacosiderite
Formula: KFe3+4(AsO4)3(OH)4 · 6-7H2O
β“˜ Pyrite
Formula: FeS2
β“˜ Pyrolusite
Formula: Mn4+O2
β“˜ Quartz
Formula: SiO2
βœͺ Selenium
Formula: Se
β“˜ Sphalerite
Formula: ZnS
β“˜ Strengite
Formula: FePO4 · 2H2O
βœͺ Variscite
Formula: AlPO4 · 2H2O
βœͺ Wavellite ?
Formula: Al3(PO4)2(OH,F)3 · 5H2O
Description: Some or all of these may be fluorwavellite as Kampf et al (2017) found only fluorwavellite in their analyses.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
β“˜Gold1.AA.05Au
β“˜Selenium1.CC.10Se
Group 2 - Sulphides and Sulfosalts
β“˜Sphalerite2.CB.05aZnS
β“˜Galena2.CD.10PbS
β“˜Pyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
β“˜Goethite4.00.Ξ±-Fe3+O(OH)
β“˜Hematite4.CB.05Fe2O3
β“˜Quartz4.DA.05SiO2
β“˜Pyrolusite4.DB.05Mn4+O2
Group 5 - Nitrates and Carbonates
β“˜Calcite5.AB.05CaCO3
β“˜Cerussite5.AB.15PbCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
β“˜Baryte7.AD.35BaSO4
β“˜Anglesite7.AD.35PbSO4
β“˜Brochantite7.BB.25Cu4(SO4)(OH)6
β“˜Jarosite7.BC.10KFe3+3(SO4)2(OH)6
β“˜Gypsum7.CD.40CaSO4 Β· 2H2O
Group 8 - Phosphates, Arsenates and Vanadates
β“˜Crandallite8.BL.10CaAl3(PO4)(PO3OH)(OH)6
β“˜Mimetite8.BN.05Pb5(AsO4)3Cl
β“˜Metavariscite8.CD.05AlPO4 Β· 2H2O
β“˜Variscite8.CD.10AlPO4 Β· 2H2O
β“˜Strengite8.CD.10FePO4 Β· 2H2O
β“˜Cacoxenite8.DC.40Fe3+24AlO6(PO4)17(OH)12 Β· 75H2O
β“˜Wavellite ?8.DC.50Al3(PO4)2(OH,F)3 Β· 5H2O
β“˜Fluorwavellite8.DC.50Al3(PO4)2(OH)2F Β· 5H2O
β“˜Fluellite8.DE.10Al2(PO4)F2(OH) Β· 7H2O
β“˜Minyulite8.DH.05KAl2(PO4)2F Β· 4H2O
β“˜Montgomeryite8.DH.25Ca4MgAl4(PO4)6(OH)4 Β· 12H2O
β“˜Meurigite-K8.DJ.20KFe3+8(PO4)6(OH)7 Β· 6.5H2O
β“˜Pharmacosiderite8.DK.10KFe3+4(AsO4)3(OH)4 Β· 6-7H2O
β“˜DufrΓ©nite8.DK.15Ca0.5Fe2+Fe3+5(PO4)4(OH)6 Β· 2H2O
Group 9 - Silicates
β“˜Kaolinite9.ED.05Al2(Si2O5)(OH)4
Unclassified
β“˜'Garnet Group'-X3Z2(SiO4)3
β“˜'Copper Stain'-

List of minerals for each chemical element

HHydrogen
Hβ“˜ BrochantiteCu4(SO4)(OH)6
Hβ“˜ CacoxeniteFe243+AlO6(PO4)17(OH)12 · 75H2O
Hβ“˜ CrandalliteCaAl3(PO4)(PO3OH)(OH)6
Hβ“˜ DufrΓ©niteCa0.5Fe2+Fe53+(PO4)4(OH)6 · 2H2O
Hβ“˜ FluelliteAl2(PO4)F2(OH) · 7H2O
Hβ“˜ GoethiteΞ±-Fe3+O(OH)
Hβ“˜ GypsumCaSO4 · 2H2O
Hβ“˜ JarositeKFe33+(SO4)2(OH)6
Hβ“˜ KaoliniteAl2(Si2O5)(OH)4
Hβ“˜ MetavarisciteAlPO4 · 2H2O
Hβ“˜ MinyuliteKAl2(PO4)2F · 4H2O
Hβ“˜ MontgomeryiteCa4MgAl4(PO4)6(OH)4 · 12H2O
Hβ“˜ PharmacosideriteKFe43+(AsO4)3(OH)4 · 6-7H2O
Hβ“˜ StrengiteFePO4 · 2H2O
Hβ“˜ VarisciteAlPO4 · 2H2O
Hβ“˜ WavelliteAl3(PO4)2(OH,F)3 · 5H2O
Hβ“˜ Meurigite-KKFe83+(PO4)6(OH)7 · 6.5H2O
Hβ“˜ FluorwavelliteAl3(PO4)2(OH)2F · 5H2O
CCarbon
Cβ“˜ CalciteCaCO3
Cβ“˜ CerussitePbCO3
OOxygen
Oβ“˜ AnglesitePbSO4
Oβ“˜ BaryteBaSO4
Oβ“˜ BrochantiteCu4(SO4)(OH)6
Oβ“˜ CacoxeniteFe243+AlO6(PO4)17(OH)12 · 75H2O
Oβ“˜ CalciteCaCO3
Oβ“˜ CerussitePbCO3
Oβ“˜ CrandalliteCaAl3(PO4)(PO3OH)(OH)6
Oβ“˜ DufrΓ©niteCa0.5Fe2+Fe53+(PO4)4(OH)6 · 2H2O
Oβ“˜ FluelliteAl2(PO4)F2(OH) · 7H2O
Oβ“˜ GoethiteΞ±-Fe3+O(OH)
Oβ“˜ GypsumCaSO4 · 2H2O
Oβ“˜ HematiteFe2O3
Oβ“˜ JarositeKFe33+(SO4)2(OH)6
Oβ“˜ KaoliniteAl2(Si2O5)(OH)4
Oβ“˜ MetavarisciteAlPO4 · 2H2O
Oβ“˜ MimetitePb5(AsO4)3Cl
Oβ“˜ MinyuliteKAl2(PO4)2F · 4H2O
Oβ“˜ MontgomeryiteCa4MgAl4(PO4)6(OH)4 · 12H2O
Oβ“˜ PharmacosideriteKFe43+(AsO4)3(OH)4 · 6-7H2O
Oβ“˜ PyrolusiteMn4+O2
Oβ“˜ QuartzSiO2
Oβ“˜ StrengiteFePO4 · 2H2O
Oβ“˜ VarisciteAlPO4 · 2H2O
Oβ“˜ WavelliteAl3(PO4)2(OH,F)3 · 5H2O
Oβ“˜ Meurigite-KKFe83+(PO4)6(OH)7 · 6.5H2O
Oβ“˜ Garnet GroupX3Z2(SiO4)3
Oβ“˜ FluorwavelliteAl3(PO4)2(OH)2F · 5H2O
FFluorine
Fβ“˜ FluelliteAl2(PO4)F2(OH) · 7H2O
Fβ“˜ MinyuliteKAl2(PO4)2F · 4H2O
Fβ“˜ WavelliteAl3(PO4)2(OH,F)3 · 5H2O
Fβ“˜ FluorwavelliteAl3(PO4)2(OH)2F · 5H2O
MgMagnesium
Mgβ“˜ MontgomeryiteCa4MgAl4(PO4)6(OH)4 · 12H2O
AlAluminium
Alβ“˜ CacoxeniteFe243+AlO6(PO4)17(OH)12 · 75H2O
Alβ“˜ CrandalliteCaAl3(PO4)(PO3OH)(OH)6
Alβ“˜ FluelliteAl2(PO4)F2(OH) · 7H2O
Alβ“˜ KaoliniteAl2(Si2O5)(OH)4
Alβ“˜ MetavarisciteAlPO4 · 2H2O
Alβ“˜ MinyuliteKAl2(PO4)2F · 4H2O
Alβ“˜ MontgomeryiteCa4MgAl4(PO4)6(OH)4 · 12H2O
Alβ“˜ VarisciteAlPO4 · 2H2O
Alβ“˜ WavelliteAl3(PO4)2(OH,F)3 · 5H2O
Alβ“˜ FluorwavelliteAl3(PO4)2(OH)2F · 5H2O
SiSilicon
Siβ“˜ KaoliniteAl2(Si2O5)(OH)4
Siβ“˜ QuartzSiO2
Siβ“˜ Garnet GroupX3Z2(SiO4)3
PPhosphorus
Pβ“˜ CacoxeniteFe243+AlO6(PO4)17(OH)12 · 75H2O
Pβ“˜ CrandalliteCaAl3(PO4)(PO3OH)(OH)6
Pβ“˜ DufrΓ©niteCa0.5Fe2+Fe53+(PO4)4(OH)6 · 2H2O
Pβ“˜ FluelliteAl2(PO4)F2(OH) · 7H2O
Pβ“˜ MetavarisciteAlPO4 · 2H2O
Pβ“˜ MinyuliteKAl2(PO4)2F · 4H2O
Pβ“˜ MontgomeryiteCa4MgAl4(PO4)6(OH)4 · 12H2O
Pβ“˜ StrengiteFePO4 · 2H2O
Pβ“˜ VarisciteAlPO4 · 2H2O
Pβ“˜ WavelliteAl3(PO4)2(OH,F)3 · 5H2O
Pβ“˜ Meurigite-KKFe83+(PO4)6(OH)7 · 6.5H2O
Pβ“˜ FluorwavelliteAl3(PO4)2(OH)2F · 5H2O
SSulfur
Sβ“˜ AnglesitePbSO4
Sβ“˜ BaryteBaSO4
Sβ“˜ BrochantiteCu4(SO4)(OH)6
Sβ“˜ GalenaPbS
Sβ“˜ GypsumCaSO4 · 2H2O
Sβ“˜ JarositeKFe33+(SO4)2(OH)6
Sβ“˜ PyriteFeS2
Sβ“˜ SphaleriteZnS
ClChlorine
Clβ“˜ MimetitePb5(AsO4)3Cl
KPotassium
Kβ“˜ JarositeKFe33+(SO4)2(OH)6
Kβ“˜ MinyuliteKAl2(PO4)2F · 4H2O
Kβ“˜ PharmacosideriteKFe43+(AsO4)3(OH)4 · 6-7H2O
Kβ“˜ Meurigite-KKFe83+(PO4)6(OH)7 · 6.5H2O
CaCalcium
Caβ“˜ CalciteCaCO3
Caβ“˜ CrandalliteCaAl3(PO4)(PO3OH)(OH)6
Caβ“˜ DufrΓ©niteCa0.5Fe2+Fe53+(PO4)4(OH)6 · 2H2O
Caβ“˜ GypsumCaSO4 · 2H2O
Caβ“˜ MontgomeryiteCa4MgAl4(PO4)6(OH)4 · 12H2O
MnManganese
Mnβ“˜ PyrolusiteMn4+O2
FeIron
Feβ“˜ CacoxeniteFe243+AlO6(PO4)17(OH)12 · 75H2O
Feβ“˜ DufrΓ©niteCa0.5Fe2+Fe53+(PO4)4(OH)6 · 2H2O
Feβ“˜ GoethiteΞ±-Fe3+O(OH)
Feβ“˜ HematiteFe2O3
Feβ“˜ JarositeKFe33+(SO4)2(OH)6
Feβ“˜ PharmacosideriteKFe43+(AsO4)3(OH)4 · 6-7H2O
Feβ“˜ PyriteFeS2
Feβ“˜ StrengiteFePO4 · 2H2O
Feβ“˜ Meurigite-KKFe83+(PO4)6(OH)7 · 6.5H2O
CuCopper
Cuβ“˜ BrochantiteCu4(SO4)(OH)6
ZnZinc
Znβ“˜ SphaleriteZnS
AsArsenic
Asβ“˜ MimetitePb5(AsO4)3Cl
Asβ“˜ PharmacosideriteKFe43+(AsO4)3(OH)4 · 6-7H2O
SeSelenium
Seβ“˜ SeleniumSe
BaBarium
Baβ“˜ BaryteBaSO4
AuGold
Auβ“˜ GoldAu
PbLead
Pbβ“˜ AnglesitePbSO4
Pbβ“˜ CerussitePbCO3
Pbβ“˜ GalenaPbS
Pbβ“˜ MimetitePb5(AsO4)3Cl

Other Databases

Link to USGS MRDS:10310458

Other Regions, Features and Areas containing this locality


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.

References

 
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