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

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Key
Lock Map
Latitude & Longitude (WGS84): 40° 15' 28'' North , 118° 20' 40'' West
Latitude & Longitude (decimal): 40.25778,-118.34472
GeoHash:G#: 9r5v508n8
Locality type:Mine
Köppen climate type:BWk : Cold desert climate
Nearest Settlements:
PlacePopulationDistance
Lovelock1,878 (2017)14.0km
Humboldt119 (2011)39.2km
Imlay171 (2011)47.7km


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

Regions containing this locality

North America PlateTectonic Plate

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


29 valid minerals.

Detailed Mineral List:

Anglesite
Formula: PbSO4
Reference: Rolf Luetcke
Baryte
Formula: BaSO4
Reference: [MinRec 32:297]
Brochantite
Formula: Cu4(SO4)(OH)6
Reference: Rolf Luetcke
Cacoxenite
Formula: Fe3+24AlO6(PO4)17(OH)12 · 75H2O
Reference: [MinRec 39:297]
Calcite
Formula: CaCO3
Reference: [MinRec 32:297]
Cerussite
Formula: PbCO3
Reference: Rolf Luetcke
'Copper Stain'
Reference: NBMG Bull 89 Geology and Mineral Resources of Pershing County, Nevada
Crandallite
Formula: CaAl3(PO4)(PO3OH)(OH)6
Reference: [MinRec 32:297]
Dufrénite
Formula: Ca0.5Fe2+Fe3+5(PO4)4(OH)6 · 2H2O
Reference: [MinRec 32:297]
Fluellite
Formula: Al2(PO4)F2(OH) · 7H2O
Reference: [MinRec 39:297]
Fluorwavellite
Formula: Al3(PO4)2(OH)2F·5H2O
Reference: Kampf A.R., Adams P.M., Barwood H. and Nash B.P. (2017) Fluorwavellite Al3(PO4)2(OH)2F.5H2O; the fluorine analogue of Wavellite; American Mineralogist v. 102 pp. 909-919
Galena
Formula: PbS
Reference: NBMG Bull 89 Geology and Mineral Resources of Pershing County, Nevada
'Garnet Group'
Formula: X3Z2(SiO4)3
Reference: NBMG Bull 89 Geology and Mineral Resources of Pershing County, Nevada
Goethite
Formula: α-Fe3+O(OH)
Reference: [MinRec 32:297]
Gypsum
Formula: CaSO4 · 2H2O
Reference: [MinRec 32:297]
Jarosite
Formula: KFe3+ 3(SO4)2(OH)6
Reference: [MinRec 32:297]
Kaolinite
Formula: Al2(Si2O5)(OH)4
Reference: [MinRec 32:297]
Metavariscite
Formula: AlPO4 · 2H2O
Reference: David M. Lowe Collection. Analyzed by David M. Lowe.
Meurigite-K
Formula: KFe3+8(PO4)6(OH)7 · 6.5H2O
Reference: [MinRec 32:297]
Mimetite
Formula: Pb5(AsO4)3Cl
Reference: Stephen Stuart
Minyulite
Formula: KAl2(PO4)2(OH,F) · 4H2O
Reference: [MinRec 39:297]
Montgomeryite
Formula: Ca4MgAl4(PO4)6(OH)4 · 12H2O
Reference: NBMG Spec. Pub. 31 Minerals of Nevada
Pharmacosiderite
Formula: KFe3+4(AsO4)3(OH)4 · 6-7H2O
Reference: [MinRec 32:297]
Pyrite
Formula: FeS2
Reference: [MinRec 32:297]
Pyrolusite
Formula: Mn4+O2
Reference: [MinRec 32:297]
Quartz
Formula: SiO2
Reference: [MinRec 32:297]
Selenium
Formula: Se
Reference: [MinRec 32:297]; Howard, D and D. Thomssen (2000) Occurrences of Native Selenium in Nevada; USA Micro Probe, newsletter of the NorthWest MicroMineral Study Group, Spring 2000, Volume 1X, Number 1, pgs 15-17.
Sphalerite
Formula: ZnS
Reference: NBMG Bull 89 Geology and Mineral Resources of Pershing County, Nevada
Strengite
Formula: FePO4 · 2H2O
Reference: [MinRec 32:297]
Variscite
Formula: AlPO4 · 2H2O
Reference: [MinRec 39:297]; MinRec 32:239
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.
Reference: [MinRec 39:297]; MinRec 32:239; Howard, D and D. Thomssen (2000) Occurrences of Native Selenium in Nevada; USA Micro Probe, newsletter of the NorthWest MicroMineral Study Group, Spring 2000, Volume 1X, Number 1, pgs 15-17. Kampf A.R., Adams P.M., Barwood H. and Nash B.P. (2017): Fluorwavellite Al3(PO4)2(OH)2F.5H2O, the fluorine analogue of Wavellite: American Mineralogist v. 102 pp. 909-919

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Selenium1.CC.10Se
Group 2 - Sulphides and Sulfosalts
Galena2.CD.10PbS
Pyrite2.EB.05aFeS2
Sphalerite2.CB.05aZnS
Group 4 - Oxides and Hydroxides
Goethite4.00.α-Fe3+O(OH)
Pyrolusite4.DB.05Mn4+O2
Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Cerussite5.AB.15PbCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Anglesite7.AD.35PbSO4
Baryte7.AD.35BaSO4
Brochantite7.BB.25Cu4(SO4)(OH)6
Gypsum7.CD.40CaSO4 · 2H2O
Jarosite7.BC.10KFe3+ 3(SO4)2(OH)6
Group 8 - Phosphates, Arsenates and Vanadates
Cacoxenite8.DC.40Fe3+24AlO6(PO4)17(OH)12 · 75H2O
Crandallite8.BL.10CaAl3(PO4)(PO3OH)(OH)6
Dufrénite8.DK.15Ca0.5Fe2+Fe3+5(PO4)4(OH)6 · 2H2O
Fluellite8.DE.10Al2(PO4)F2(OH) · 7H2O
Metavariscite8.CD.05AlPO4 · 2H2O
Meurigite-K8.DJ.20KFe3+8(PO4)6(OH)7 · 6.5H2O
Mimetite8.BN.05Pb5(AsO4)3Cl
Minyulite8.DH.05KAl2(PO4)2(OH,F) · 4H2O
Montgomeryite8.DH.25Ca4MgAl4(PO4)6(OH)4 · 12H2O
Pharmacosiderite8.DK.10KFe3+4(AsO4)3(OH)4 · 6-7H2O
Strengite8.CD.10FePO4 · 2H2O
Variscite8.CD.10AlPO4 · 2H2O
Wavellite ?8.DC.50Al3(PO4)2(OH,F)3 · 5H2O
Group 9 - Silicates
Kaolinite9.ED.05Al2(Si2O5)(OH)4
Unclassified Minerals, Rocks, etc.
'Copper Stain'-
Fluorwavellite-Al3(PO4)2(OH)2F·5H2O
'Garnet Group'-X3Z2(SiO4)3

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Semi-metals and non-metals
Selenium1.3.4.1Se
Group 2 - SULFIDES
AmXp, with m:p = 1:1
Galena2.8.1.1PbS
Sphalerite2.8.2.1ZnS
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 4 - SIMPLE OXIDES
AX2
Pyrolusite4.4.1.4Mn4+O2
Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
XO(OH)
Goethite6.1.1.2α-Fe3+O(OH)
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Cerussite14.1.3.4PbCO3
Group 28 - ANHYDROUS ACID AND NORMAL SULFATES
AXO4
Anglesite28.3.1.3PbSO4
Baryte28.3.1.1BaSO4
Group 29 - HYDRATED ACID AND NORMAL SULFATES
AXO4·xH2O
Gypsum29.6.3.1CaSO4 · 2H2O
Group 30 - ANHYDROUS SULFATES CONTAINING HYDROXYL OR HALOGEN
(AB)m(XO4)pZq, where m:p>2:1
Brochantite30.1.3.1Cu4(SO4)(OH)6
(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
Metavariscite40.4.3.1AlPO4 · 2H2O
Strengite40.4.1.2FePO4 · 2H2O
Variscite40.4.1.1AlPO4 · 2H2O
Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
A5(XO4)3Zq
Mimetite41.8.4.2Pb5(AsO4)3Cl
Group 42 - HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
A2(XO4)Zq·xH2O
Fluellite42.6.9.1Al2(PO4)F2(OH) · 7H2O
(AB)2(XO4)Zq·xH2O
Crandallite42.7.3.1CaAl3(PO4)(PO3OH)(OH)6
(AB)5(XO4)3Zq·xH2O
Pharmacosiderite42.8.1a.1KFe3+4(AsO4)3(OH)4 · 6-7H2O
(AB)7(XO4)4Zq·xH2O
Dufrénite42.9.1.2Ca0.5Fe2+Fe3+5(PO4)4(OH)6 · 2H2O
A3(XO4)2Zq·xH2O
Wavellite ?42.10.2.1Al3(PO4)2(OH,F)3 · 5H2O
(AB)3(XO4)2Zq·xH2O
Minyulite42.11.5.1KAl2(PO4)2(OH,F) · 4H2O
Montgomeryite42.11.8.1Ca4MgAl4(PO4)6(OH)4 · 12H2O
Miscellaneous
Cacoxenite42.13.5.1Fe3+24AlO6(PO4)17(OH)12 · 75H2O
Meurigite-K42.13.14.1KFe3+8(PO4)6(OH)7 · 6.5H2O
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
'Copper Stain'-
Fluorwavellite-Al3(PO4)2(OH)2F·5H2O
'Garnet Group'-X3Z2(SiO4)3
Kaolinite-Al2(Si2O5)(OH)4

List of minerals for each chemical element

HHydrogen
H CacoxeniteFe243+AlO6(PO4)17(OH)12 · 75H2O
H FluelliteAl2(PO4)F2(OH) · 7H2O
H MinyuliteKAl2(PO4)2(OH,F) · 4H2O
H VarisciteAlPO4 · 2H2O
H GypsumCaSO4 · 2H2O
H CrandalliteCaAl3(PO4)(PO3OH)(OH)6
H JarositeKFe3+ 3(SO4)2(OH)6
H Meurigite-KKFe83+(PO4)6(OH)7 · 6.5H2O
H PharmacosideriteKFe43+(AsO4)3(OH)4 · 6-7H2O
H StrengiteFePO4 · 2H2O
H MontgomeryiteCa4MgAl4(PO4)6(OH)4 · 12H2O
H MetavarisciteAlPO4 · 2H2O
H BrochantiteCu4(SO4)(OH)6
H FluorwavelliteAl3(PO4)2(OH)2F·5H2O
H DufréniteCa0.5Fe2+Fe53+(PO4)4(OH)6 · 2H2O
H Goethiteα-Fe3+O(OH)
H KaoliniteAl2(Si2O5)(OH)4
H WavelliteAl3(PO4)2(OH,F)3 · 5H2O
CCarbon
C CerussitePbCO3
C CalciteCaCO3
OOxygen
O CacoxeniteFe243+AlO6(PO4)17(OH)12 · 75H2O
O FluelliteAl2(PO4)F2(OH) · 7H2O
O MinyuliteKAl2(PO4)2(OH,F) · 4H2O
O VarisciteAlPO4 · 2H2O
O GypsumCaSO4 · 2H2O
O BaryteBaSO4
O CrandalliteCaAl3(PO4)(PO3OH)(OH)6
O JarositeKFe3+ 3(SO4)2(OH)6
O Meurigite-KKFe83+(PO4)6(OH)7 · 6.5H2O
O PharmacosideriteKFe43+(AsO4)3(OH)4 · 6-7H2O
O PyrolusiteMn4+O2
O QuartzSiO2
O StrengiteFePO4 · 2H2O
O Garnet GroupX3Z2(SiO4)3
O MontgomeryiteCa4MgAl4(PO4)6(OH)4 · 12H2O
O MetavarisciteAlPO4 · 2H2O
O AnglesitePbSO4
O BrochantiteCu4(SO4)(OH)6
O CerussitePbCO3
O MimetitePb5(AsO4)3Cl
O FluorwavelliteAl3(PO4)2(OH)2F·5H2O
O DufréniteCa0.5Fe2+Fe53+(PO4)4(OH)6 · 2H2O
O CalciteCaCO3
O Goethiteα-Fe3+O(OH)
O KaoliniteAl2(Si2O5)(OH)4
O WavelliteAl3(PO4)2(OH,F)3 · 5H2O
FFluorine
F FluelliteAl2(PO4)F2(OH) · 7H2O
F MinyuliteKAl2(PO4)2(OH,F) · 4H2O
F FluorwavelliteAl3(PO4)2(OH)2F·5H2O
F WavelliteAl3(PO4)2(OH,F)3 · 5H2O
MgMagnesium
Mg MontgomeryiteCa4MgAl4(PO4)6(OH)4 · 12H2O
AlAluminium
Al CacoxeniteFe243+AlO6(PO4)17(OH)12 · 75H2O
Al FluelliteAl2(PO4)F2(OH) · 7H2O
Al MinyuliteKAl2(PO4)2(OH,F) · 4H2O
Al VarisciteAlPO4 · 2H2O
Al CrandalliteCaAl3(PO4)(PO3OH)(OH)6
Al MontgomeryiteCa4MgAl4(PO4)6(OH)4 · 12H2O
Al MetavarisciteAlPO4 · 2H2O
Al FluorwavelliteAl3(PO4)2(OH)2F·5H2O
Al KaoliniteAl2(Si2O5)(OH)4
Al WavelliteAl3(PO4)2(OH,F)3 · 5H2O
SiSilicon
Si QuartzSiO2
Si Garnet GroupX3Z2(SiO4)3
Si KaoliniteAl2(Si2O5)(OH)4
PPhosphorus
P CacoxeniteFe243+AlO6(PO4)17(OH)12 · 75H2O
P FluelliteAl2(PO4)F2(OH) · 7H2O
P MinyuliteKAl2(PO4)2(OH,F) · 4H2O
P VarisciteAlPO4 · 2H2O
P CrandalliteCaAl3(PO4)(PO3OH)(OH)6
P Meurigite-KKFe83+(PO4)6(OH)7 · 6.5H2O
P StrengiteFePO4 · 2H2O
P MontgomeryiteCa4MgAl4(PO4)6(OH)4 · 12H2O
P MetavarisciteAlPO4 · 2H2O
P FluorwavelliteAl3(PO4)2(OH)2F·5H2O
P DufréniteCa0.5Fe2+Fe53+(PO4)4(OH)6 · 2H2O
P WavelliteAl3(PO4)2(OH,F)3 · 5H2O
SSulfur
S GypsumCaSO4 · 2H2O
S BaryteBaSO4
S JarositeKFe3+ 3(SO4)2(OH)6
S PyriteFeS2
S GalenaPbS
S SphaleriteZnS
S AnglesitePbSO4
S BrochantiteCu4(SO4)(OH)6
ClChlorine
Cl MimetitePb5(AsO4)3Cl
KPotassium
K MinyuliteKAl2(PO4)2(OH,F) · 4H2O
K JarositeKFe3+ 3(SO4)2(OH)6
K Meurigite-KKFe83+(PO4)6(OH)7 · 6.5H2O
K PharmacosideriteKFe43+(AsO4)3(OH)4 · 6-7H2O
CaCalcium
Ca GypsumCaSO4 · 2H2O
Ca CrandalliteCaAl3(PO4)(PO3OH)(OH)6
Ca MontgomeryiteCa4MgAl4(PO4)6(OH)4 · 12H2O
Ca DufréniteCa0.5Fe2+Fe53+(PO4)4(OH)6 · 2H2O
Ca CalciteCaCO3
MnManganese
Mn PyrolusiteMn4+O2
FeIron
Fe CacoxeniteFe243+AlO6(PO4)17(OH)12 · 75H2O
Fe JarositeKFe3+ 3(SO4)2(OH)6
Fe Meurigite-KKFe83+(PO4)6(OH)7 · 6.5H2O
Fe PharmacosideriteKFe43+(AsO4)3(OH)4 · 6-7H2O
Fe PyriteFeS2
Fe StrengiteFePO4 · 2H2O
Fe DufréniteCa0.5Fe2+Fe53+(PO4)4(OH)6 · 2H2O
Fe Goethiteα-Fe3+O(OH)
CuCopper
Cu BrochantiteCu4(SO4)(OH)6
ZnZinc
Zn SphaleriteZnS
AsArsenic
As PharmacosideriteKFe43+(AsO4)3(OH)4 · 6-7H2O
As MimetitePb5(AsO4)3Cl
SeSelenium
Se SeleniumSe
BaBarium
Ba BaryteBaSO4
PbLead
Pb GalenaPbS
Pb AnglesitePbSO4
Pb CerussitePbCO3
Pb MimetitePb5(AsO4)3Cl

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

Middle Jurassic - Norian
163.5 - 227 Ma



ID: 2989993
Jungo Terrane - Turbiditic, fine-grained, terrigenous clastic rocks

Age: Mesozoic (163.5 - 227 Ma)

Stratigraphic Name: Grass Valley Formation; Happy Creek Volcanic Complex; Osobb Formation; Winnemucca Formation; Raspberry Formation

Description: The Jungo terrane, also called the Lovelock assemblage or Fencemaker allochthon (Oldow, Satterfield, and Silberling, 1993), consists of complexly deformed, thick basinal, turbiditic, fine-grained, terrigenous clastic rocks, mainly Norian, but also as young as Pliensbachian (Late Triassic and Early Jurassic) age. It crops out in southern Washoe, Churchill, Humboldt, and Pershing Counties. These rocks represent the basinal facies component of the Auld Lang Syne Group (Burke and Silberling, 1973; Lupe and Silberling, 1985). The Jungo terrane has no known basement and is structurally detached from coeval shelf facies (Silberling, Jones, and others, 1992). It is locally overlain unconformably by Middle or Upper Jurassic peritidal sedimentary rocks (Jcg) intruded by a gabbroic igneous assemblage (Silberling, 1991). Rocks included with the Jungo terrane were originally mapped as the Grass Valley Formation of the Auld Lang Syne Group in Humboldt and Pershing Counties; some rocks were mapped as the Happy Creek Volcanic “series” (now the Happy Creek Volcanic Complex) in Humboldt County, the Nightingale sequence in southern Washoe County, the Osobb Formation of the Auld Lang Syne Group in Churchill County, and the Winnemucca and Raspberry Formations of the Auld Lang Syne Group (Compton, 1960) in the Santa Rosa Range in Humboldt County.

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.

Lithology: Major:{siliciclastic}

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]

Triassic
201.3 - 251.902 Ma



ID: 3184762
Mesozoic sedimentary rocks

Age: Triassic (201.3 - 251.902 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]

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)
Howard, D. and Thomssen, D. (2000) Occurrences of Native Selenium in Nevada. USA Micro Probe, newsletter of the NorthWest MicroMineral Study Group, Spring 2000, Volume IX(1): 15-17.
Jensen, M. and Leising, J. (2001) Wavellite, Fluellite & Minyulite from the Willard Mine, Pershing County, Nevada. Mineralogical Record 32(4): 297-303.
Mineralogical Record (2008) 39: 297.
Kampf, A.R., Adams, P.M., Barwood, H., and Nash, B.P. (2017) Fluorwavellite Al3(PO4)2(OH)2F.5H2O; the fluorine analogue of Wavellite. American Mineralogist: 102: 909-919.
Johnson, Maureen G. (1977) Geology and Mineral Resources of Pershing County, Nevada. Nevada Bureau of Mines and Geology Bulletin 89.
Castor, Stephen B. and Ferdock, Gregory C. (2003) Minerals of Nevada. Nevada Bureau of Mines and Geology Special Publication 31.


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