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Midnite Mine, Wellpinit Area, Springdale Mining District, Stevens County, Washington, USAi
Regional Level Types
Midnite MineMine
Wellpinit AreaArea
Springdale Mining DistrictMining District
Stevens CountyCounty
WashingtonState
USACountry

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PhotosMapsSearch
06169700017654090556128.jpg
Midnite Pit

Midnite Mine, Wellpinit Area, Springdale Mining District, Stevens County, Washington, USA
01916180017370561188589.jpg
Uranophane

Midnite Mine, Wellpinit Area, Springdale Mining District, Stevens County, Washington, USA
01767970017272025201417.jpg
Autunite

Midnite Mine, Wellpinit Area, Springdale Mining District, Stevens County, Washington, USA
09385030017653290809386.jpg
Midnite Pit

Midnite Mine, Wellpinit Area, Springdale Mining District, Stevens County, Washington, USA
04316120017272025139068.jpg
Uranophane

Midnite Mine, Wellpinit Area, Springdale Mining District, Stevens County, Washington, USA
01490030017272025146730.jpg
Autunite

Midnite Mine, Wellpinit Area, Springdale Mining District, Stevens County, Washington, USA
06169700017654090556128.jpg
Midnite Pit

Midnite Mine, Wellpinit Area, Springdale Mining District, Stevens County, Washington, USA
08535850017272025179956.jpg
Uranophane

Midnite Mine, Wellpinit Area, Springdale Mining District, Stevens County, Washington, USA
Latitude & Longitude (WGS84):
47° 56' 26'' North , 118° 5' 31'' West
Latitude & Longitude (decimal):
47.94056,-118.09222
GRN:
N32W59
Type:
Mine
Köppen climate type:
Csb : Warm-summer Mediterranean climate
Nearest Settlements:
PlacePopulationDistance
Springdale275 (2017)29.1km
Davenport1,672 (2017)32.1km
Reardan554 (2017)34.1km
Loon Lake783 (2011)36.7km
Valley146 (2011)37.8km
Mindat Locality ID:
7252
Long-form identifier:
mindat:1:2:7252:9
GUID (UUID V4):
0
Other/historical names associated with this locality:
Midnight Mine; Boyd lease


A large uranium mine located four miles NW of Wellpinit. It produced ore from 1954 to 1982.

The deposit consists of uranium mineralization in stockwork veins and shear zones up to several hundred feet in length and 30' in width. The ore was near the contact of the Cretaceous Midnite Mine pluton and Proterozoic Togo argillite. It was oxidized to within around 150' of the surface, with ore below consisting of uraninite and pyrite.

Development: Mine-tonnes/yr- ore>100000 leach>n/a waste>1000000 plant- type>precip. Tonnes/yr- input>175000 output>39900

Geology: Felsic igneous rocks in miogeosynclinal sedimentary rocks

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


34 valid minerals.

Rock Types Recorded


Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Andalusite
Formula: Al2(SiO4)O
ⓘ 'Apatite'
Formula: Ca5(PO4)3A
ⓘ Arsenopyrite
Formula: FeAsS
ⓘ Autunite
Formula: Ca(UO2)2(PO4)2 · 10-12H2O
Habit: sharp crystals to .25"
Colour: yellow
ⓘ 'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ Calcite
Formula: CaCO3
ⓘ Chalcopyrite
Formula: CuFeS2
ⓘ Coffinite
Formula: U(SiO4) · nH2O
ⓘ Delvauxite
Formula: CaFe4(PO4,SO4)2(OH)8 · 4-6H2O not confirmed
ⓘ Diopside
Formula: CaMgSi2O6
ⓘ Epidote
Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
ⓘ 'Garnet Group'
Formula: X3Z2(SiO4)3
ⓘ Graphite
Formula: C
ⓘ 'Gummite'
ⓘ Hematite
Formula: Fe2O3
ⓘ Hisingerite
Formula: Fe3+2(Si2O5)(OH)4 · 2H2O
ⓘ Kaolinite
Formula: Al2(Si2O5)(OH)4
ⓘ 'K Feldspar'
ⓘ 'K Feldspar var. Adularia'
Formula: KAlSi3O8
ⓘ Liebigite
Formula: Ca2(UO2)(CO3)3 · 11H2O
ⓘ Magnetite
Formula: Fe2+Fe3+2O4
ⓘ Marcasite
Formula: FeS2
ⓘ Meta-autunite
Formula: Ca(UO2)2(PO4)2 · 6H2O
ⓘ Molybdenite
Formula: MoS2
ⓘ Montmorillonite
Formula: (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
ⓘ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
ⓘ Muscovite var. Illite
Formula: K0.65Al2.0[Al0.65Si3.35O10](OH)2
ⓘ Muscovite var. Sericite
Formula: KAl2(AlSi3O10)(OH)2
ⓘ Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
ⓘ Phosphuranylite
Formula: KCa(H3O)3(UO2)7(PO4)4O4 · 8H2O
ⓘ 'Plagioclase'
Formula: (Na,Ca)[(Si,Al)AlSi2]O8
ⓘ Pyrite
Formula: FeS2
ⓘ Quartz
Formula: SiO2
ⓘ Rutile
Formula: TiO2
ⓘ 'Scapolite'
ⓘ Sklodowskite
Formula: Mg(UO2)2(SiO3OH)2 · 6H2O
ⓘ Sphalerite
Formula: ZnS
ⓘ Stilbite-Na
Formula: Na9(Si27Al9)O72 · 28H2O
ⓘ Torbernite
Formula: Cu(UO2)2(PO4)2 · 12H2O
ⓘ 'Tourmaline'
Formula: AD3G6(T6O18)(BO3)3X3Z
ⓘ Uraninite
Formula: UO2
ⓘ Uranophane
Formula: Ca(UO2)2(SiO3OH)2 · 5H2O
ⓘ Vesuvianite
Formula: Ca19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
ⓘ Wollastonite
Formula: Ca3(Si3O9)
ⓘ Zippeite
Formula: K3(UO2)4(SO4)2O3(OH) · 3H2O

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘGraphite1.CB.05aC
Group 2 - Sulphides and Sulfosalts
ⓘSphalerite2.CB.05aZnS
ⓘChalcopyrite2.CB.10aCuFeS2
ⓘMolybdenite2.EA.30MoS2
ⓘPyrite2.EB.05aFeS2
ⓘMarcasite2.EB.10aFeS2
ⓘArsenopyrite2.EB.20FeAsS
Group 4 - Oxides and Hydroxides
ⓘMagnetite4.BB.05Fe2+Fe3+2O4
ⓘHematite4.CB.05Fe2O3
ⓘQuartz4.DA.05SiO2
ⓘRutile4.DB.05TiO2
ⓘUraninite4.DL.05UO2
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
ⓘLiebigite5.ED.20Ca2(UO2)(CO3)3 · 11H2O
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘZippeite7.EC.05K3(UO2)4(SO4)2O3(OH) · 3H2O
Group 8 - Phosphates, Arsenates and Vanadates
ⓘDelvauxite8.DM.35CaFe4(PO4,SO4)2(OH)8 · 4-6H2O not confirmed
ⓘAutunite8.EB.05Ca(UO2)2(PO4)2 · 10-12H2O
ⓘTorbernite8.EB.05Cu(UO2)2(PO4)2 · 12H2O
ⓘMeta-autunite8.EB.10Ca(UO2)2(PO4)2 · 6H2O
ⓘPhosphuranylite8.EC.10KCa(H3O)3(UO2)7(PO4)4O4 · 8H2O
Group 9 - Silicates
ⓘCoffinite9.AD.30U(SiO4) · nH2O
ⓘAndalusite9.AF.10Al2(SiO4)O
ⓘSklodowskite9.AK.10Mg(UO2)2(SiO3OH)2 · 6H2O
ⓘUranophane9.AK.15Ca(UO2)2(SiO3OH)2 · 5H2O
ⓘEpidote9.BG.05a(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
ⓘVesuvianite9.BG.35Ca19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
ⓘDiopside9.DA.15CaMgSi2O6
ⓘWollastonite9.DG.05Ca3(Si3O9)
ⓘMuscovite
var. Illite		9.EC.15K0.65Al2.0[Al0.65Si3.35O10](OH)2
ⓘ9.EC.15KAl2(AlSi3O10)(OH)2
ⓘvar. Sericite9.EC.15KAl2(AlSi3O10)(OH)2
ⓘPhlogopite9.EC.20KMg3(AlSi3O10)(OH)2
ⓘMontmorillonite9.EC.40(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
ⓘKaolinite9.ED.05Al2(Si2O5)(OH)4
ⓘHisingerite9.ED.10Fe3+2(Si2O5)(OH)4 · 2H2O
ⓘStilbite-Na9.GE.10Na9(Si27Al9)O72 · 28H2O
Unclassified
ⓘ'K Feldspar
var. Adularia'		-KAlSi3O8
ⓘ'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ'Gummite'-
ⓘ'Tourmaline'-AD3G6(T6O18)(BO3)3X3Z
ⓘ'Scapolite'-
ⓘ'Plagioclase'-(Na,Ca)[(Si,Al)AlSi2]O8
ⓘ'K Feldspar'-
ⓘ'Garnet Group'-X3Z2(SiO4)3
ⓘ'Apatite'-Ca5(PO4)3A

List of minerals for each chemical element

HHydrogen
Hⓘ AutuniteCa(UO2)2(PO4)2 · 10-12H2O
Hⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Hⓘ CoffiniteU(SiO4) · nH2O
Hⓘ DelvauxiteCaFe4(PO4,SO4)2(OH)8 · 4-6H2O not confirmed
Hⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Hⓘ HisingeriteFe23+(Si2O5)(OH)4 · 2H2O
Hⓘ Muscovite var. IlliteK0.65Al2.0[Al0.65Si3.35O10](OH)2
Hⓘ KaoliniteAl2(Si2O5)(OH)4
Hⓘ LiebigiteCa2(UO2)(CO3)3 · 11H2O
Hⓘ Meta-autuniteCa(UO2)2(PO4)2 · 6H2O
Hⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Hⓘ Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Hⓘ PhosphuranyliteKCa(H3O)3(UO2)7(PO4)4O4 · 8H2O
Hⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Hⓘ SklodowskiteMg(UO2)2(SiO3OH)2 · 6H2O
Hⓘ TorberniteCu(UO2)2(PO4)2 · 12H2O
Hⓘ UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
Hⓘ VesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
Hⓘ ZippeiteK3(UO2)4(SO4)2O3(OH) · 3H2O
Hⓘ Stilbite-NaNa9(Si27Al9)O72 · 28H2O
Hⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
BBoron
Bⓘ TourmalineAD3G6(T6O18)(BO3)3X3Z
CCarbon
Cⓘ CalciteCaCO3
Cⓘ GraphiteC
Cⓘ LiebigiteCa2(UO2)(CO3)3 · 11H2O
OOxygen
Oⓘ K Feldspar var. AdulariaKAlSi3O8
Oⓘ AndalusiteAl2(SiO4)O
Oⓘ AutuniteCa(UO2)2(PO4)2 · 10-12H2O
Oⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Oⓘ CalciteCaCO3
Oⓘ CoffiniteU(SiO4) · nH2O
Oⓘ DelvauxiteCaFe4(PO4,SO4)2(OH)8 · 4-6H2O not confirmed
Oⓘ DiopsideCaMgSi2O6
Oⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Oⓘ HematiteFe2O3
Oⓘ HisingeriteFe23+(Si2O5)(OH)4 · 2H2O
Oⓘ Muscovite var. IlliteK0.65Al2.0[Al0.65Si3.35O10](OH)2
Oⓘ KaoliniteAl2(Si2O5)(OH)4
Oⓘ LiebigiteCa2(UO2)(CO3)3 · 11H2O
Oⓘ MagnetiteFe2+Fe23+O4
Oⓘ Meta-autuniteCa(UO2)2(PO4)2 · 6H2O
Oⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Oⓘ Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Oⓘ PhosphuranyliteKCa(H3O)3(UO2)7(PO4)4O4 · 8H2O
Oⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Oⓘ QuartzSiO2
Oⓘ RutileTiO2
Oⓘ SklodowskiteMg(UO2)2(SiO3OH)2 · 6H2O
Oⓘ TorberniteCu(UO2)2(PO4)2 · 12H2O
Oⓘ TourmalineAD3G6(T6O18)(BO3)3X3Z
Oⓘ UraniniteUO2
Oⓘ UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
Oⓘ VesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
Oⓘ WollastoniteCa3(Si3O9)
Oⓘ ZippeiteK3(UO2)4(SO4)2O3(OH) · 3H2O
Oⓘ Stilbite-NaNa9(Si27Al9)O72 · 28H2O
Oⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
Oⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Oⓘ Garnet GroupX3Z2(SiO4)3
Oⓘ ApatiteCa5(PO4)3A
FFluorine
Fⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
NaSodium
Naⓘ Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Naⓘ Stilbite-NaNa9(Si27Al9)O72 · 28H2O
Naⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
MgMagnesium
Mgⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Mgⓘ DiopsideCaMgSi2O6
Mgⓘ Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Mgⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Mgⓘ SklodowskiteMg(UO2)2(SiO3OH)2 · 6H2O
Mgⓘ VesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
AlAluminium
Alⓘ K Feldspar var. AdulariaKAlSi3O8
Alⓘ AndalusiteAl2(SiO4)O
Alⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Alⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Alⓘ Muscovite var. IlliteK0.65Al2.0[Al0.65Si3.35O10](OH)2
Alⓘ KaoliniteAl2(Si2O5)(OH)4
Alⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Alⓘ Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Alⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Alⓘ VesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
Alⓘ Stilbite-NaNa9(Si27Al9)O72 · 28H2O
Alⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
Alⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
SiSilicon
Siⓘ K Feldspar var. AdulariaKAlSi3O8
Siⓘ AndalusiteAl2(SiO4)O
Siⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Siⓘ CoffiniteU(SiO4) · nH2O
Siⓘ DiopsideCaMgSi2O6
Siⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Siⓘ HisingeriteFe23+(Si2O5)(OH)4 · 2H2O
Siⓘ Muscovite var. IlliteK0.65Al2.0[Al0.65Si3.35O10](OH)2
Siⓘ KaoliniteAl2(Si2O5)(OH)4
Siⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Siⓘ Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Siⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Siⓘ QuartzSiO2
Siⓘ SklodowskiteMg(UO2)2(SiO3OH)2 · 6H2O
Siⓘ UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
Siⓘ VesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
Siⓘ WollastoniteCa3(Si3O9)
Siⓘ Stilbite-NaNa9(Si27Al9)O72 · 28H2O
Siⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
Siⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Siⓘ Garnet GroupX3Z2(SiO4)3
PPhosphorus
Pⓘ AutuniteCa(UO2)2(PO4)2 · 10-12H2O
Pⓘ DelvauxiteCaFe4(PO4,SO4)2(OH)8 · 4-6H2O not confirmed
Pⓘ Meta-autuniteCa(UO2)2(PO4)2 · 6H2O
Pⓘ PhosphuranyliteKCa(H3O)3(UO2)7(PO4)4O4 · 8H2O
Pⓘ TorberniteCu(UO2)2(PO4)2 · 12H2O
Pⓘ ApatiteCa5(PO4)3A
SSulfur
Sⓘ ArsenopyriteFeAsS
Sⓘ ChalcopyriteCuFeS2
Sⓘ DelvauxiteCaFe4(PO4,SO4)2(OH)8 · 4-6H2O not confirmed
Sⓘ MarcasiteFeS2
Sⓘ MolybdeniteMoS2
Sⓘ PyriteFeS2
Sⓘ SphaleriteZnS
Sⓘ ZippeiteK3(UO2)4(SO4)2O3(OH) · 3H2O
KPotassium
Kⓘ K Feldspar var. AdulariaKAlSi3O8
Kⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Kⓘ Muscovite var. IlliteK0.65Al2.0[Al0.65Si3.35O10](OH)2
Kⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Kⓘ PhosphuranyliteKCa(H3O)3(UO2)7(PO4)4O4 · 8H2O
Kⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Kⓘ ZippeiteK3(UO2)4(SO4)2O3(OH) · 3H2O
Kⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
CaCalcium
Caⓘ AutuniteCa(UO2)2(PO4)2 · 10-12H2O
Caⓘ CalciteCaCO3
Caⓘ DelvauxiteCaFe4(PO4,SO4)2(OH)8 · 4-6H2O not confirmed
Caⓘ DiopsideCaMgSi2O6
Caⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Caⓘ LiebigiteCa2(UO2)(CO3)3 · 11H2O
Caⓘ Meta-autuniteCa(UO2)2(PO4)2 · 6H2O
Caⓘ Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Caⓘ PhosphuranyliteKCa(H3O)3(UO2)7(PO4)4O4 · 8H2O
Caⓘ UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
Caⓘ VesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
Caⓘ WollastoniteCa3(Si3O9)
Caⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Caⓘ ApatiteCa5(PO4)3A
TiTitanium
Tiⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Tiⓘ RutileTiO2
FeIron
Feⓘ ArsenopyriteFeAsS
Feⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Feⓘ ChalcopyriteCuFeS2
Feⓘ DelvauxiteCaFe4(PO4,SO4)2(OH)8 · 4-6H2O not confirmed
Feⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Feⓘ HematiteFe2O3
Feⓘ HisingeriteFe23+(Si2O5)(OH)4 · 2H2O
Feⓘ MagnetiteFe2+Fe23+O4
Feⓘ MarcasiteFeS2
Feⓘ PyriteFeS2
Feⓘ VesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
CuCopper
Cuⓘ ChalcopyriteCuFeS2
Cuⓘ TorberniteCu(UO2)2(PO4)2 · 12H2O
ZnZinc
Znⓘ SphaleriteZnS
AsArsenic
Asⓘ ArsenopyriteFeAsS
MoMolybdenum
Moⓘ MolybdeniteMoS2
UUranium
Uⓘ AutuniteCa(UO2)2(PO4)2 · 10-12H2O
Uⓘ CoffiniteU(SiO4) · nH2O
Uⓘ LiebigiteCa2(UO2)(CO3)3 · 11H2O
Uⓘ Meta-autuniteCa(UO2)2(PO4)2 · 6H2O
Uⓘ PhosphuranyliteKCa(H3O)3(UO2)7(PO4)4O4 · 8H2O
Uⓘ SklodowskiteMg(UO2)2(SiO3OH)2 · 6H2O
Uⓘ TorberniteCu(UO2)2(PO4)2 · 12H2O
Uⓘ UraniniteUO2
Uⓘ UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
Uⓘ ZippeiteK3(UO2)4(SO4)2O3(OH) · 3H2O

Geochronology

Mineralization age: Eocene : 51 ± 0.5 Ma

Important note: This table is based only on rock and mineral ages recorded on mindat.org for this locality and is not necessarily a complete representation of the geochronology, but does give an indication of possible mineralization events relevant to this locality. As more age information is added this table may expand in the future. A break in the table simply indicates a lack of data entered here, not necessarily a break in the geologic sequence. Grey background entries are from different, related, localities.

Geologic TimeRocks, Minerals and Events
Phanerozoic
 Cenozoic
  Paleogene
   Eocene
ⓘ Uraninite51 ± 0.5 Ma

Other Databases

Wikipedia:https://en.wikipedia.org/wiki/Midnite_Mine
Wikidata ID:Q6842887
Link to USGS MRDS:10008500

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America PlateTectonic Plate

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References

Valentine, Grant M., Huntting, Marshall T. (1960) Part II - Metallic Minerals, in Inventory of Washington Minerals. Vol II. Bulletin 37, Washington Geological Survey.
Barrington, Jonathan, Kerr, Paul F. (1961) Uranium mineralization at the Midnite Mine, Spokane, Washington. Economic Geology, 56 (2) 241-258 doi:10.2113/gsecongeo.56.2.241
Becraft, George E. and Paul L. Weis (1963) Geology and mineral deposits of the Turtle Lake quadrangle, Washington. USGS Bulletin 1131.
von Backstrom, J. W. (1974). Other uranium deposit. In IAEA Symposium on the formation of uranium ore deposits. Athens, Greece: 605-624.
Cannon, Bart (1975) Minerals of Washington. Cordilleran. 184 pp.pages 53, 76, 81
Nash, J. T., & Lehrman, N. J. (1975) Geology of the Midnite uranium mine, Stevens County, Washington; a preliminary report. USGS Open File Report (OFR) 75-402.
Derkey, Robert E., Joseph, Nancy L., Lasmanis, Raymond (1990, November) Metal Mines of Washington - Preliminary Report. Open File Report 90-18. Washington Division of Geology and Earth Resources
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