Willard Mine, Willard Mining District, Humboldt Range, Pershing County, Nevada, USAi
| Regional Level Types | |
|---|---|
| Willard Mine | Mine |
| Willard Mining District | Mining District |
| Humboldt Range | Mountain Range |
| Pershing County | County |
| Nevada | State |
| USA | Country |
This page is currently not sponsored. Click here to sponsor this page.
Latitude & Longitude (WGS84):
40° 15' 28'' North , 118° 20' 40'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
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 ElementsCommodity 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 DiagramDetailed Mineral List:
| ⓘ Anglesite Formula: PbSO4 References: |
| ⓘ Baryte Formula: BaSO4 |
| ⓘ Brochantite Formula: Cu4(SO4)(OH)6 References: |
| ✪ Cacoxenite Formula: Fe3+24AlO6(PO4)17(OH)12 · 75H2O |
| ⓘ Calcite Formula: CaCO3 |
| ⓘ Cerussite Formula: PbCO3 References: |
| ⓘ 'Copper Stain' |
| ⓘ Crandallite Formula: CaAl3(PO4)(PO3OH)(OH)6 |
| ⓘ Dufrénite Formula: Ca0.5Fe2+Fe3+5(PO4)4(OH)6 · 2H2O |
| ✪ Fluellite Formula: Al2(PO4)F2(OH) · 7H2O |
| ⓘ Fluorwavellite Formula: Al3(PO4)2(OH)2F · 5H2O |
| ⓘ Galena Formula: PbS |
| ⓘ 'Garnet Group' Formula: X3Z2(SiO4)3 |
| ⓘ Goethite Formula: α-Fe3+O(OH) |
| ⓘ Gold Formula: Au |
| ✪ Gypsum Formula: CaSO4 · 2H2O |
| ⓘ Hematite Formula: Fe2O3 |
| ⓘ Jarosite Formula: KFe3+3(SO4)2(OH)6 |
| ⓘ Kaolinite Formula: Al2(Si2O5)(OH)4 |
| ⓘ Metavariscite Formula: AlPO4 · 2H2O |
| ⓘ Meurigite-K Formula: KFe3+8(PO4)6(OH)7 · 6.5H2O |
| ⓘ Mimetite Formula: Pb5(AsO4)3Cl References: |
| ✪ Minyulite Formula: KAl2(PO4)2F · 4H2O |
| ⓘ Montgomeryite Formula: Ca4MgAl4(PO4)6(OH)4 · 12H2O |
| ⓘ Pharmacosiderite Formula: KFe3+4(AsO4)3(OH)4 · 6-7H2O |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ Pyrolusite Formula: Mn4+O2 |
| ⓘ Quartz Formula: SiO2 |
| ✪ Selenium Formula: Se References: |
| ⓘ Sphalerite Formula: ZnS |
| ⓘ Strengite Formula: FePO4 · 2H2O |
| ✪ Variscite Formula: AlPO4 · 2H2O References: |
| ✪ 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. References: |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Gold | 1.AA.05 | Au |
| ⓘ | Selenium | 1.CC.10 | Se |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Sphalerite | 2.CB.05a | ZnS |
| ⓘ | Galena | 2.CD.10 | PbS |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Goethite | 4.00. | α-Fe3+O(OH) |
| ⓘ | Hematite | 4.CB.05 | Fe2O3 |
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| ⓘ | Pyrolusite | 4.DB.05 | Mn4+O2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Calcite | 5.AB.05 | CaCO3 |
| ⓘ | Cerussite | 5.AB.15 | PbCO3 |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| ⓘ | Baryte | 7.AD.35 | BaSO4 |
| ⓘ | Anglesite | 7.AD.35 | PbSO4 |
| ⓘ | Brochantite | 7.BB.25 | Cu4(SO4)(OH)6 |
| ⓘ | Jarosite | 7.BC.10 | KFe3+3(SO4)2(OH)6 |
| ⓘ | Gypsum | 7.CD.40 | CaSO4 · 2H2O |
| Group 8 - Phosphates, Arsenates and Vanadates | |||
| ⓘ | Crandallite | 8.BL.10 | CaAl3(PO4)(PO3OH)(OH)6 |
| ⓘ | Mimetite | 8.BN.05 | Pb5(AsO4)3Cl |
| ⓘ | Metavariscite | 8.CD.05 | AlPO4 · 2H2O |
| ⓘ | Variscite | 8.CD.10 | AlPO4 · 2H2O |
| ⓘ | Strengite | 8.CD.10 | FePO4 · 2H2O |
| ⓘ | Cacoxenite | 8.DC.40 | Fe3+24AlO6(PO4)17(OH)12 · 75H2O |
| ⓘ | Wavellite ? | 8.DC.50 | Al3(PO4)2(OH,F)3 · 5H2O |
| ⓘ | Fluorwavellite | 8.DC.50 | Al3(PO4)2(OH)2F · 5H2O |
| ⓘ | Fluellite | 8.DE.10 | Al2(PO4)F2(OH) · 7H2O |
| ⓘ | Minyulite | 8.DH.05 | KAl2(PO4)2F · 4H2O |
| ⓘ | Montgomeryite | 8.DH.25 | Ca4MgAl4(PO4)6(OH)4 · 12H2O |
| ⓘ | Meurigite-K | 8.DJ.20 | KFe3+8(PO4)6(OH)7 · 6.5H2O |
| ⓘ | Pharmacosiderite | 8.DK.10 | KFe3+4(AsO4)3(OH)4 · 6-7H2O |
| ⓘ | Dufrénite | 8.DK.15 | Ca0.5Fe2+Fe3+5(PO4)4(OH)6 · 2H2O |
| Group 9 - Silicates | |||
| ⓘ | Kaolinite | 9.ED.05 | Al2(Si2O5)(OH)4 |
| Unclassified | |||
| ⓘ | 'Garnet Group' | - | X3Z2(SiO4)3 |
| ⓘ | 'Copper Stain' | - | |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Brochantite | Cu4(SO4)(OH)6 |
| H | ⓘ Cacoxenite | Fe243+AlO6(PO4)17(OH)12 · 75H2O |
| H | ⓘ Crandallite | CaAl3(PO4)(PO3OH)(OH)6 |
| H | ⓘ Dufrénite | Ca0.5Fe2+Fe53+(PO4)4(OH)6 · 2H2O |
| H | ⓘ Fluellite | Al2(PO4)F2(OH) · 7H2O |
| H | ⓘ Goethite | α-Fe3+O(OH) |
| H | ⓘ Gypsum | CaSO4 · 2H2O |
| H | ⓘ Jarosite | KFe33+(SO4)2(OH)6 |
| H | ⓘ Kaolinite | Al2(Si2O5)(OH)4 |
| H | ⓘ Metavariscite | AlPO4 · 2H2O |
| H | ⓘ Minyulite | KAl2(PO4)2F · 4H2O |
| H | ⓘ Montgomeryite | Ca4MgAl4(PO4)6(OH)4 · 12H2O |
| H | ⓘ Pharmacosiderite | KFe43+(AsO4)3(OH)4 · 6-7H2O |
| H | ⓘ Strengite | FePO4 · 2H2O |
| H | ⓘ Variscite | AlPO4 · 2H2O |
| H | ⓘ Wavellite | Al3(PO4)2(OH,F)3 · 5H2O |
| H | ⓘ Meurigite-K | KFe83+(PO4)6(OH)7 · 6.5H2O |
| H | ⓘ Fluorwavellite | Al3(PO4)2(OH)2F · 5H2O |
| C | Carbon | |
| C | ⓘ Calcite | CaCO3 |
| C | ⓘ Cerussite | PbCO3 |
| O | Oxygen | |
| O | ⓘ Anglesite | PbSO4 |
| O | ⓘ Baryte | BaSO4 |
| O | ⓘ Brochantite | Cu4(SO4)(OH)6 |
| O | ⓘ Cacoxenite | Fe243+AlO6(PO4)17(OH)12 · 75H2O |
| O | ⓘ Calcite | CaCO3 |
| O | ⓘ Cerussite | PbCO3 |
| O | ⓘ Crandallite | CaAl3(PO4)(PO3OH)(OH)6 |
| O | ⓘ Dufrénite | Ca0.5Fe2+Fe53+(PO4)4(OH)6 · 2H2O |
| O | ⓘ Fluellite | Al2(PO4)F2(OH) · 7H2O |
| O | ⓘ Goethite | α-Fe3+O(OH) |
| O | ⓘ Gypsum | CaSO4 · 2H2O |
| O | ⓘ Hematite | Fe2O3 |
| O | ⓘ Jarosite | KFe33+(SO4)2(OH)6 |
| O | ⓘ Kaolinite | Al2(Si2O5)(OH)4 |
| O | ⓘ Metavariscite | AlPO4 · 2H2O |
| O | ⓘ Mimetite | Pb5(AsO4)3Cl |
| O | ⓘ Minyulite | KAl2(PO4)2F · 4H2O |
| O | ⓘ Montgomeryite | Ca4MgAl4(PO4)6(OH)4 · 12H2O |
| O | ⓘ Pharmacosiderite | KFe43+(AsO4)3(OH)4 · 6-7H2O |
| O | ⓘ Pyrolusite | Mn4+O2 |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Strengite | FePO4 · 2H2O |
| O | ⓘ Variscite | AlPO4 · 2H2O |
| O | ⓘ Wavellite | Al3(PO4)2(OH,F)3 · 5H2O |
| O | ⓘ Meurigite-K | KFe83+(PO4)6(OH)7 · 6.5H2O |
| O | ⓘ Garnet Group | X3Z2(SiO4)3 |
| O | ⓘ Fluorwavellite | Al3(PO4)2(OH)2F · 5H2O |
| F | Fluorine | |
| F | ⓘ Fluellite | Al2(PO4)F2(OH) · 7H2O |
| F | ⓘ Minyulite | KAl2(PO4)2F · 4H2O |
| F | ⓘ Wavellite | Al3(PO4)2(OH,F)3 · 5H2O |
| F | ⓘ Fluorwavellite | Al3(PO4)2(OH)2F · 5H2O |
| Mg | Magnesium | |
| Mg | ⓘ Montgomeryite | Ca4MgAl4(PO4)6(OH)4 · 12H2O |
| Al | Aluminium | |
| Al | ⓘ Cacoxenite | Fe243+AlO6(PO4)17(OH)12 · 75H2O |
| Al | ⓘ Crandallite | CaAl3(PO4)(PO3OH)(OH)6 |
| Al | ⓘ Fluellite | Al2(PO4)F2(OH) · 7H2O |
| Al | ⓘ Kaolinite | Al2(Si2O5)(OH)4 |
| Al | ⓘ Metavariscite | AlPO4 · 2H2O |
| Al | ⓘ Minyulite | KAl2(PO4)2F · 4H2O |
| Al | ⓘ Montgomeryite | Ca4MgAl4(PO4)6(OH)4 · 12H2O |
| Al | ⓘ Variscite | AlPO4 · 2H2O |
| Al | ⓘ Wavellite | Al3(PO4)2(OH,F)3 · 5H2O |
| Al | ⓘ Fluorwavellite | Al3(PO4)2(OH)2F · 5H2O |
| Si | Silicon | |
| Si | ⓘ Kaolinite | Al2(Si2O5)(OH)4 |
| Si | ⓘ Quartz | SiO2 |
| Si | ⓘ Garnet Group | X3Z2(SiO4)3 |
| P | Phosphorus | |
| P | ⓘ Cacoxenite | Fe243+AlO6(PO4)17(OH)12 · 75H2O |
| P | ⓘ Crandallite | CaAl3(PO4)(PO3OH)(OH)6 |
| P | ⓘ Dufrénite | Ca0.5Fe2+Fe53+(PO4)4(OH)6 · 2H2O |
| P | ⓘ Fluellite | Al2(PO4)F2(OH) · 7H2O |
| P | ⓘ Metavariscite | AlPO4 · 2H2O |
| P | ⓘ Minyulite | KAl2(PO4)2F · 4H2O |
| P | ⓘ Montgomeryite | Ca4MgAl4(PO4)6(OH)4 · 12H2O |
| P | ⓘ Strengite | FePO4 · 2H2O |
| P | ⓘ Variscite | AlPO4 · 2H2O |
| P | ⓘ Wavellite | Al3(PO4)2(OH,F)3 · 5H2O |
| P | ⓘ Meurigite-K | KFe83+(PO4)6(OH)7 · 6.5H2O |
| P | ⓘ Fluorwavellite | Al3(PO4)2(OH)2F · 5H2O |
| S | Sulfur | |
| S | ⓘ Anglesite | PbSO4 |
| S | ⓘ Baryte | BaSO4 |
| S | ⓘ Brochantite | Cu4(SO4)(OH)6 |
| S | ⓘ Galena | PbS |
| S | ⓘ Gypsum | CaSO4 · 2H2O |
| S | ⓘ Jarosite | KFe33+(SO4)2(OH)6 |
| S | ⓘ Pyrite | FeS2 |
| S | ⓘ Sphalerite | ZnS |
| Cl | Chlorine | |
| Cl | ⓘ Mimetite | Pb5(AsO4)3Cl |
| K | Potassium | |
| K | ⓘ Jarosite | KFe33+(SO4)2(OH)6 |
| K | ⓘ Minyulite | KAl2(PO4)2F · 4H2O |
| K | ⓘ Pharmacosiderite | KFe43+(AsO4)3(OH)4 · 6-7H2O |
| K | ⓘ Meurigite-K | KFe83+(PO4)6(OH)7 · 6.5H2O |
| Ca | Calcium | |
| Ca | ⓘ Calcite | CaCO3 |
| Ca | ⓘ Crandallite | CaAl3(PO4)(PO3OH)(OH)6 |
| Ca | ⓘ Dufrénite | Ca0.5Fe2+Fe53+(PO4)4(OH)6 · 2H2O |
| Ca | ⓘ Gypsum | CaSO4 · 2H2O |
| Ca | ⓘ Montgomeryite | Ca4MgAl4(PO4)6(OH)4 · 12H2O |
| Mn | Manganese | |
| Mn | ⓘ Pyrolusite | Mn4+O2 |
| Fe | Iron | |
| Fe | ⓘ Cacoxenite | Fe243+AlO6(PO4)17(OH)12 · 75H2O |
| Fe | ⓘ Dufrénite | Ca0.5Fe2+Fe53+(PO4)4(OH)6 · 2H2O |
| Fe | ⓘ Goethite | α-Fe3+O(OH) |
| Fe | ⓘ Hematite | Fe2O3 |
| Fe | ⓘ Jarosite | KFe33+(SO4)2(OH)6 |
| Fe | ⓘ Pharmacosiderite | KFe43+(AsO4)3(OH)4 · 6-7H2O |
| Fe | ⓘ Pyrite | FeS2 |
| Fe | ⓘ Strengite | FePO4 · 2H2O |
| Fe | ⓘ Meurigite-K | KFe83+(PO4)6(OH)7 · 6.5H2O |
| Cu | Copper | |
| Cu | ⓘ Brochantite | Cu4(SO4)(OH)6 |
| Zn | Zinc | |
| Zn | ⓘ Sphalerite | ZnS |
| As | Arsenic | |
| As | ⓘ Mimetite | Pb5(AsO4)3Cl |
| As | ⓘ Pharmacosiderite | KFe43+(AsO4)3(OH)4 · 6-7H2O |
| Se | Selenium | |
| Se | ⓘ Selenium | Se |
| Ba | Barium | |
| Ba | ⓘ Baryte | BaSO4 |
| Au | Gold | |
| Au | ⓘ Gold | Au |
| Pb | Lead | |
| Pb | ⓘ Anglesite | PbSO4 |
| Pb | ⓘ Cerussite | PbCO3 |
| Pb | ⓘ Galena | PbS |
| Pb | ⓘ Mimetite | Pb5(AsO4)3Cl |
Other Databases
| Link to USGS MRDS: | 10310458 |
|---|
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.
References
Willard Mine, Willard Mining District, Humboldt Range, Pershing County, Nevada, USA