Log InRegister
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreOur ScienceMindat Newsletter [Free Download]Contact Us
Donate to MindatSponsor a PageCorporate SponsorshipSponsored Pages
Learning CenterWhat Is a Mineral?The Most Common Minerals on EarthInformation for EducatorsMindat ArticlesMindat Newsletter [Free Download]The ElementsThe Mineral Quiz
Search FormMinerals by PropertiesMinerals by ChemistryMineral Visual ExplorerAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDMinerals by CountryAlphabetical Mineral IndexAlphabetical Locality SearchMineral Association SearchList of CountriesLocalities Near MePhoto SearchSearch ArticlesSearch GlossaryThe Rock H. Currier Digital LibraryMore Search Options
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
MineralsPetrologyFossilsMeteoritesGeologic Time
Mining CompaniesStatisticsMineral MuseumsClubs & OrganizationsMineral Shows & EventsDevice SettingsTime Machine
Read DiscussionsIdentification Request
Photo SearchPhoto GalleriesSearch by ColourPhoto Colour ExplorerNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography

Spokane Molybdenum Mine, Egypt Mining District, Lincoln County, Washington, USAi
Regional Level Types
Spokane Molybdenum MineMine
Egypt Mining DistrictMining District
Lincoln CountyCounty
WashingtonState
USACountry

This page is currently not sponsored. Click here to sponsor this page.
PhotosMapsSearch
Latitude & Longitude (WGS84):
47° 52' 48'' North , 118° 9' 49'' West
Latitude & Longitude (decimal):
47.88000,-118.16361
GeoHash:
G#: c2ebrh7ch
GRN:
N32W59
Type:
Mine
Köppen climate type:
Csb : Warm-summer Mediterranean climate
Nearest Settlements:
PlacePopulationDistance
Davenport1,672 (2017)25.1km
Creston216 (2017)29.8km
Reardan554 (2017)31.7km
Springdale275 (2017)37.1km
Harrington400 (2017)44.9km
Mindat Locality ID:
15510
Long-form identifier:
mindat:1:2:15510:9
GUID (UUID V4):
0
Other/historical names associated with this locality:
Pitney Butte Mine; Egypt Mine


A molybdenum mine north of Davenport on the north side of Pitney Butte. The ore occurred in a quartz vein in quartz monzonite. Development consisted of an upper adit and a lower adit worked in 1956. Some ore was reported to have been produced in 1941.

Tectonics: Cretaceous Granitic Rocks Intrude Rocks Of The Kootenay Arc And Adjacent Terranes In Northeastern Washington (Rhodes And Hyndman, 1988).

Geology: At the spokane molybdenite mine the cretaceous, fine-grained monzogranite is cut by a dike of the sanpoil volcanics (becraft and weis, 1963, p. 67).

Ore(s): Quartz Is Found In Muscovite-Rich Pegmatite Veins Of Two Types: (1) Milky White Quartz And (2) Gray, Massive Quartz In Segregations. Both Types Of Quartz Contain Sparse Flakes Of Molybdenite (Becraft, And Weis, 1963, P. 67-68). A Cross Fracture In The Main Vein Contains Lenses Of Black Radioactive Material (Huntting, 1956, P. 269).

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


9 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:

ⓘ 'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
Habit: large euhedral crystals
ⓘ Chalcopyrite
Formula: CuFeS2
ⓘ Fluorite
Formula: CaF2
ⓘ Molybdenite
Formula: MoS2
ⓘ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
ⓘ Pyrite
Formula: FeS2
ⓘ Quartz
Formula: SiO2
ⓘ Sphalerite
Formula: ZnS
ⓘ Torbernite
Formula: Cu(UO2)2(PO4)2 · 12H2O
ⓘ Uraninite
Formula: UO2
ⓘ Uraninite var. Pitchblende
Formula: UO2

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘSphalerite2.CB.05aZnS
ⓘChalcopyrite2.CB.10aCuFeS2
ⓘMolybdenite2.EA.30MoS2
ⓘPyrite2.EB.05aFeS2
Group 3 - Halides
ⓘFluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
ⓘQuartz4.DA.05SiO2
ⓘUraninite
var. Pitchblende		4.DL.05UO2
ⓘ4.DL.05UO2
Group 8 - Phosphates, Arsenates and Vanadates
ⓘTorbernite8.EB.05Cu(UO2)2(PO4)2 · 12H2O
Group 9 - Silicates
ⓘMuscovite9.EC.15KAl2(AlSi3O10)(OH)2
Unclassified
ⓘ'Apatite'-Ca5(PO4)3(Cl/F/OH)

List of minerals for each chemical element

HHydrogen
Hⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Hⓘ TorberniteCu(UO2)2(PO4)2 · 12H2O
Hⓘ ApatiteCa5(PO4)3(Cl/F/OH)
OOxygen
Oⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Oⓘ Uraninite var. PitchblendeUO2
Oⓘ QuartzSiO2
Oⓘ TorberniteCu(UO2)2(PO4)2 · 12H2O
Oⓘ UraniniteUO2
Oⓘ ApatiteCa5(PO4)3(Cl/F/OH)
FFluorine
Fⓘ FluoriteCaF2
Fⓘ ApatiteCa5(PO4)3(Cl/F/OH)
AlAluminium
Alⓘ MuscoviteKAl2(AlSi3O10)(OH)2
SiSilicon
Siⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Siⓘ QuartzSiO2
PPhosphorus
Pⓘ TorberniteCu(UO2)2(PO4)2 · 12H2O
Pⓘ ApatiteCa5(PO4)3(Cl/F/OH)
SSulfur
Sⓘ ChalcopyriteCuFeS2
Sⓘ MolybdeniteMoS2
Sⓘ PyriteFeS2
Sⓘ SphaleriteZnS
ClChlorine
Clⓘ ApatiteCa5(PO4)3(Cl/F/OH)
KPotassium
Kⓘ MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Caⓘ FluoriteCaF2
Caⓘ ApatiteCa5(PO4)3(Cl/F/OH)
FeIron
Feⓘ ChalcopyriteCuFeS2
Feⓘ PyriteFeS2
CuCopper
Cuⓘ ChalcopyriteCuFeS2
Cuⓘ TorberniteCu(UO2)2(PO4)2 · 12H2O
ZnZinc
Znⓘ SphaleriteZnS
MoMolybdenum
Moⓘ MolybdeniteMoS2
UUranium
Uⓘ Uraninite var. PitchblendeUO2
Uⓘ TorberniteCu(UO2)2(PO4)2 · 12H2O
Uⓘ UraniniteUO2

Other Databases

Link to USGS MRDS:10055960

Other Regions, Features and Areas containing this locality

North AmericaContinent
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

Phillips Purdy, C. (1954) Molybdenum Occurrences of Washington. Report of Investigations No.18, Division of Mines and Geology, Department of Conservations and Development, Washington, 125 pages.
Valentine, Grant M., Huntting, Marshall T. (1960) Inventory of Washington Minerals. Bulletin 37. Washington Geological Survey
George E. Becraft and Paul L. Weis (1963) Geology and mineral deposits of the Turtle Lake quadrangle, Washington. USGS Bulletin 1131
Cannon, Bart (1975) Minerals of Washington. Cordilleran, Mercer Island, WA.p.47
Quick NavTopCommoditiesMineral ListRock TypesOther DatabasesOther RegionsReferences
 
and/or  
Mindat.org® is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Mindat® and mindat.org® are registered trademarks of the Hudson Institute of Mineralogy.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2026, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph and Ida Chau.
Content on this site may not be used to train, fine-tune, or otherwise develop artificial intelligence or machine learning models without prior written permission - see our Terms & Conditions.
To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844. doi:10.2138/am-2024-9486.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: October 21, 2026 18:30:21 Page updated: August 22, 2025 11:08:44
Go to top of page