Vote for your favorite mineral in #MinCup26! - Erythrite vs. Skutterudite
Pretty pink and poisonous Erythrite is against its shiny silver and structurally-useful Skutterudite.
Log InRegister
Quick Links : The Mindat ManualThe Rock H. Currier Digital LibraryMindat Newsletter [Free Download]
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe ElementsThe Rock H. Currier Digital LibraryGeologic TimeExplore Fossils
Minerals by PropertiesMinerals by ChemistryMineral Visual ExplorerAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsClubs & OrganizationsMineral Shows & EventsThe Mindat DirectoryDevice SettingsThe Mineral QuizTime Machine
Photo SearchPhoto GalleriesSearch by ColorPhoto Colour ExplorerNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography

Cowboy Mine (East Cowboy), Takilma Mining District, Josephine County, Oregon, USAi
Regional Level Types
Cowboy Mine (East Cowboy)Mine
Takilma Mining DistrictMining District
Josephine CountyCounty
OregonState
USACountry

This page is currently not sponsored. Click here to sponsor this page.
PhotosMapsSearch
Latitude & Longitude (WGS84):
42° 1' 9'' North , 123° 36' 26'' West
Latitude & Longitude (decimal):
Type:
Nearest Settlements:
PlacePopulationDistance
Takilma378 (2011)3.7km
O'Brien504 (2011)9.5km
Cave Junction1,932 (2017)16.3km
Kerby595 (2011)19.8km
Selma695 (2011)28.9km
Mindat Locality ID:
66522
Long-form identifier:
mindat:1:2:66522:6
GUID (UUID V4):
0


Located in the NE¼, Section 11, Township 44 South, Range 8 West, Willamette Meridian.

Aggregates of massive sulfide "boulders" in sheared serpentinite.

Ref: Koski, Randolph A., and Derkey, Robert E., 1981, Massive sulfide deposits in oceanic-crust and island-arc terranes of southwestern Oregon: Oregon Geology, v. 43, no. 9, pages 119-125.

Oregon Metal Mines Handbook, 1952, Oregon Department of Geology and Mineral Industries: Bulletin No. 14-C, Vol. 2, Section 1 - Josephine Co., 2nd Edition, pages 186-190.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


16 valid minerals.

Detailed Mineral List:

Antigorite
Formula: Mg3(Si2O5)(OH)4
Calcite
Formula: CaCO3
Chalcocite
Formula: Cu2S
Chalcopyrite
Formula: CuFeS2
Cobaltite
Formula: CoAsS
Cubanite
Formula: CuFe2S3
Cuprite
Formula: Cu2O
Epidote
Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Hematite
Formula: Fe2O3
'Limonite'
Magnesite
Formula: MgCO3
Malachite
Formula: Cu2(CO3)(OH)2
Pyrrhotite
Formula: Fe1-xS
Quartz
Formula: SiO2
Sphalerite
Formula: ZnS
Talc
Formula: Mg3Si4O10(OH)2
Tenorite
Formula: CuO

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Chalcocite2.BA.05Cu2S
Sphalerite2.CB.05aZnS
Chalcopyrite2.CB.10aCuFeS2
Cubanite2.CB.55aCuFe2S3
Pyrrhotite2.CC.10Fe1-xS
Cobaltite2.EB.25CoAsS
Group 4 - Oxides and Hydroxides
Cuprite4.AA.10Cu2O
Tenorite4.AB.10CuO
Hematite4.CB.05Fe2O3
Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Magnesite5.AB.05MgCO3
Malachite5.BA.10Cu2(CO3)(OH)2
Group 9 - Silicates
Epidote9.BG.05a(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Talc9.EC.05Mg3Si4O10(OH)2
Antigorite9.ED.15Mg3(Si2O5)(OH)4
Unclassified
'Limonite'-

List of minerals for each chemical element

HHydrogen
H AntigoriteMg3(Si2O5)(OH)4
H Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
H MalachiteCu2(CO3)(OH)2
H TalcMg3Si4O10(OH)2
CCarbon
C CalciteCaCO3
C MagnesiteMgCO3
C MalachiteCu2(CO3)(OH)2
OOxygen
O AntigoriteMg3(Si2O5)(OH)4
O CalciteCaCO3
O CupriteCu2O
O Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
O HematiteFe2O3
O MagnesiteMgCO3
O MalachiteCu2(CO3)(OH)2
O QuartzSiO2
O TalcMg3Si4O10(OH)2
O TenoriteCuO
MgMagnesium
Mg AntigoriteMg3(Si2O5)(OH)4
Mg MagnesiteMgCO3
Mg TalcMg3Si4O10(OH)2
AlAluminium
Al Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
SiSilicon
Si AntigoriteMg3(Si2O5)(OH)4
Si Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Si QuartzSiO2
Si TalcMg3Si4O10(OH)2
SSulfur
S ChalcopyriteCuFeS2
S ChalcociteCu2S
S CobaltiteCoAsS
S CubaniteCuFe2S3
S PyrrhotiteFe1-xS
S SphaleriteZnS
CaCalcium
Ca CalciteCaCO3
Ca Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
FeIron
Fe ChalcopyriteCuFeS2
Fe CubaniteCuFe2S3
Fe Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Fe HematiteFe2O3
Fe PyrrhotiteFe1-xS
CoCobalt
Co CobaltiteCoAsS
CuCopper
Cu ChalcopyriteCuFeS2
Cu ChalcociteCu2S
Cu CubaniteCuFe2S3
Cu CupriteCu2O
Cu MalachiteCu2(CO3)(OH)2
Cu TenoriteCuO
ZnZinc
Zn SphaleriteZnS
AsArsenic
As CobaltiteCoAsS

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.
 
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: September 2, 2026 19:42:46 Page updated: August 12, 2025 15:00:50
Go to top of page