Vote for your favorite mineral in #MinCup26! - Arsenuranylite vs. Talc
It's a pair of soft and lovely minerals as Stichtite and Talc compete for your votes.
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

Cochetopa Mining District (Cochetopa Creek Mining District), Saguache County, Colorado, USAi
Regional Level Types
Cochetopa Mining District (Cochetopa Creek Mining District)Mining District
Saguache CountyCounty
ColoradoState
USACountry

This page is currently not sponsored. Click here to sponsor this page.
PhotosMapsSearch
06197820017272248695847.jpg
Mine ruins

Thornburg Mine, Cochetopa Mining District, Saguache County, Colorado, USA
00425900017272248707510.jpg
Mine workings

Thornburg Mine, Cochetopa Mining District, Saguache County, Colorado, USA
06258190017272248701742.jpg
View of the mine

Thornburg Mine, Cochetopa Mining District, Saguache County, Colorado, USA
02308170017272052346452.jpg
Mine ruins

Thornburg Mine, Cochetopa Mining District, Saguache County, Colorado, USA
04655190017272052359603.jpg
Mine workings

Thornburg Mine, Cochetopa Mining District, Saguache County, Colorado, USA
06258190017272248701742.jpg
View of the mine

Thornburg Mine, Cochetopa Mining District, Saguache County, Colorado, USA
09594120017272052376440.jpg
Mine ruins

Thornburg Mine, Cochetopa Mining District, Saguache County, Colorado, USA
00425900017272248707510.jpg
Mine workings

Thornburg Mine, Cochetopa Mining District, Saguache County, Colorado, USA
Latitude & Longitude (WGS84):
38° 22' 36'' North , 106° 46' 3'' West
Latitude & Longitude (decimal):
38.37667,-106.76750
GRN:
N26W61
Type:
Mining District
Köppen climate type:
Dfc : Subarctic climate
Mindat Locality ID:
118475
Long-form identifier:
mindat:1:2:118475:7
GUID (UUID V4):
0


Claims included: Four Metals; MS 13884; Eastern Star No. 3; MS 16852; Yukon; MS 7175; Sterling; MS 11174; X-Ray; MS 17604; North of Ireland; MS 13884; Eastern Star; MS 16852; Eastern Star; MS 16731; Climax; MS 9547; Little Boy; MS 15265; Cochetopa Creek District; Standard

The locality also extends into the following counties: Gunnison.

Commodities (major): Au, Ag, Cu; (minor): V, Zn; (trace): Mn, Ta, Pb, Hg, W & U.

Development Status: Producer.

Host Rock Units: Junction Creek Sandstone And Morrison Formation, Quartz Monzonite Of Cochetopa Creek, Dakota Sandstone, Dubois Greenstone

Geologic Structure: San Juan Volcanic field, Gunnison uplift, Gunnison Gold belt, Cochetopa pluton, Gold Basin stock, Cochetopa Park caldera, Cochetopa dome, Razor Creek dome, Los Ochos fault.

Host Rock: quartz monzonite, phyllite, quartzite, amphibolite, sandstone.

Tectonic Structure: Central Cordillera (Southern Rocky Mountains).

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded from this region.


Mineral List

Mineral list contains entries from the region specified including sub-localities

31 valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Rock list contains entries from the region specified including sub-localities

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Autunite
Formula: Ca(UO2)2(PO4)2 · 10-12H2O
ⓘ Baryte
Formula: BaSO4
ⓘ Bornite
Formula: Cu5FeS4
ⓘ Brannerite
Formula: UTi2O6
ⓘ Chalcocite
Formula: Cu2S
ⓘ Chalcopyrite
Formula: CuFeS2
ⓘ 'Chlorite Group'
ⓘ Cinnabar
Formula: HgS
ⓘ Covellite
Formula: CuS
ⓘ Cuprite
Formula: Cu2O
ⓘ Cuprite var. Chalcotrichite
Formula: Cu2O
ⓘ Epidote
Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
ⓘ Fluorite
Formula: CaF2
ⓘ Galena
Formula: PbS
ⓘ Hematite
Formula: Fe2O3
ⓘ Ilsemannite
Formula: Mo3O8 · nH2O
ⓘ Johannite
Formula: Cu(UO2)2(SO4)2(OH)2 · 8H2O
ⓘ 'Limonite'
ⓘ Malachite
Formula: Cu2(CO3)(OH)2
ⓘ Marcasite
Formula: FeS2
ⓘ Metazeunerite
Formula: Cu(UO2)2(AsO4)2 · 8H2O
ⓘ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
ⓘ Muscovite var. Sericite
Formula: KAl2(AlSi3O10)(OH)2
ⓘ Native Gold
Formula: Au
ⓘ Pyrite
Formula: FeS2
ⓘ Pyrrhotite
Formula: Fe1-xS
ⓘ Quartz
Formula: SiO2
ⓘ Quartz var. Chalcedony
Formula: SiO2
ⓘ Scheelite
Formula: Ca(WO4)
ⓘ Sphalerite
Formula: ZnS
ⓘ 'Tantalite'
Formula: (Mn,Fe)(Ta,Nb)2O6
ⓘ 'Tetrahedrite Subgroup'
Formula: Cu6(Cu4C2+2)Sb4S12S
ⓘ Torbernite
Formula: Cu(UO2)2(PO4)2 · 12H2O
ⓘ Uraninite
Formula: UO2
Localities: Reported from at least 6 localities in this region.
ⓘ Uraninite var. Pitchblende
Formula: UO2
ⓘ Uranocircite
Formula: Ba(UO2)2(PO4)2 · 10H2O
ⓘ Uranophane
Formula: Ca(UO2)2(SiO3OH)2 · 5H2O
ⓘ Uranopilite
Formula: (UO2)6(SO4)O2(OH)6 · 14H2O
ⓘ Zippeite
Formula: K3(UO2)4(SO4)2O3(OH) · 3H2O

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘNative Gold1.AA.05Au
Group 2 - Sulphides and Sulfosalts
ⓘChalcocite2.BA.05Cu2S
ⓘBornite2.BA.15Cu5FeS4
ⓘCovellite2.CA.05aCuS
ⓘSphalerite2.CB.05aZnS
ⓘChalcopyrite2.CB.10aCuFeS2
ⓘPyrrhotite2.CC.10Fe1-xS
ⓘGalena2.CD.10PbS
ⓘCinnabar2.CD.15aHgS
ⓘPyrite2.EB.05aFeS2
ⓘMarcasite2.EB.10aFeS2
ⓘ'Tetrahedrite Subgroup'2.GB.05Cu6(Cu4C2+2)Sb4S12S
Group 3 - Halides
ⓘFluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
ⓘCuprite
var. Chalcotrichite		4.AA.10Cu2O
ⓘ4.AA.10Cu2O
ⓘHematite4.CB.05Fe2O3
ⓘQuartz
var. Chalcedony		4.DA.05SiO2
ⓘ4.DA.05SiO2
ⓘBrannerite4.DH.05UTi2O6
ⓘUraninite
var. Pitchblende		4.DL.05UO2
ⓘ4.DL.05UO2
ⓘIlsemannite4.FJ.15Mo3O8 · nH2O
Group 5 - Nitrates and Carbonates
ⓘMalachite5.BA.10Cu2(CO3)(OH)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘBaryte7.AD.35BaSO4
ⓘUranopilite7.EA.05(UO2)6(SO4)O2(OH)6 · 14H2O
ⓘJohannite7.EB.05Cu(UO2)2(SO4)2(OH)2 · 8H2O
ⓘZippeite7.EC.05K3(UO2)4(SO4)2O3(OH) · 3H2O
ⓘScheelite7.GA.05Ca(WO4)
Group 8 - Phosphates, Arsenates and Vanadates
ⓘAutunite8.EB.05Ca(UO2)2(PO4)2 · 10-12H2O
ⓘTorbernite8.EB.05Cu(UO2)2(PO4)2 · 12H2O
ⓘUranocircite8.EB.05Ba(UO2)2(PO4)2 · 10H2O
ⓘMetazeunerite8.EB.10Cu(UO2)2(AsO4)2 · 8H2O
Group 9 - Silicates
ⓘUranophane9.AK.15Ca(UO2)2(SiO3OH)2 · 5H2O
ⓘEpidote9.BG.05a(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
ⓘMuscovite9.EC.15KAl2(AlSi3O10)(OH)2
ⓘvar. Sericite9.EC.15KAl2(AlSi3O10)(OH)2
Unclassified
ⓘ'Chlorite Group'-
ⓘ'Limonite'-
ⓘ'Tantalite'-(Mn,Fe)(Ta,Nb)2O6

List of minerals for each chemical element

HHydrogen
Hⓘ AutuniteCa(UO2)2(PO4)2 · 10-12H2O
Hⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Hⓘ IlsemanniteMo3O8 · nH2O
Hⓘ JohanniteCu(UO2)2(SO4)2(OH)2 · 8H2O
Hⓘ MalachiteCu2(CO3)(OH)2
Hⓘ MetazeuneriteCu(UO2)2(AsO4)2 · 8H2O
Hⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Hⓘ TorberniteCu(UO2)2(PO4)2 · 12H2O
Hⓘ UranocirciteBa(UO2)2(PO4)2 · 10H2O
Hⓘ UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
Hⓘ Uranopilite(UO2)6(SO4)O2(OH)6 · 14H2O
Hⓘ ZippeiteK3(UO2)4(SO4)2O3(OH) · 3H2O
Hⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
CCarbon
Cⓘ MalachiteCu2(CO3)(OH)2
OOxygen
Oⓘ AutuniteCa(UO2)2(PO4)2 · 10-12H2O
Oⓘ BaryteBaSO4
Oⓘ BranneriteUTi2O6
Oⓘ Quartz var. ChalcedonySiO2
Oⓘ Cuprite var. ChalcotrichiteCu2O
Oⓘ CupriteCu2O
Oⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Oⓘ HematiteFe2O3
Oⓘ IlsemanniteMo3O8 · nH2O
Oⓘ JohanniteCu(UO2)2(SO4)2(OH)2 · 8H2O
Oⓘ MalachiteCu2(CO3)(OH)2
Oⓘ MetazeuneriteCu(UO2)2(AsO4)2 · 8H2O
Oⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Oⓘ Uraninite var. PitchblendeUO2
Oⓘ QuartzSiO2
Oⓘ ScheeliteCa(WO4)
Oⓘ Tantalite(Mn,Fe)(Ta,Nb)2O6
Oⓘ TorberniteCu(UO2)2(PO4)2 · 12H2O
Oⓘ UraniniteUO2
Oⓘ UranocirciteBa(UO2)2(PO4)2 · 10H2O
Oⓘ UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
Oⓘ Uranopilite(UO2)6(SO4)O2(OH)6 · 14H2O
Oⓘ ZippeiteK3(UO2)4(SO4)2O3(OH) · 3H2O
Oⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
FFluorine
Fⓘ FluoriteCaF2
AlAluminium
Alⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Alⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Alⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
SiSilicon
Siⓘ Quartz var. ChalcedonySiO2
Siⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Siⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Siⓘ QuartzSiO2
Siⓘ UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
Siⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
PPhosphorus
Pⓘ AutuniteCa(UO2)2(PO4)2 · 10-12H2O
Pⓘ TorberniteCu(UO2)2(PO4)2 · 12H2O
Pⓘ UranocirciteBa(UO2)2(PO4)2 · 10H2O
SSulfur
Sⓘ BaryteBaSO4
Sⓘ BorniteCu5FeS4
Sⓘ ChalcopyriteCuFeS2
Sⓘ ChalcociteCu2S
Sⓘ CinnabarHgS
Sⓘ CovelliteCuS
Sⓘ GalenaPbS
Sⓘ JohanniteCu(UO2)2(SO4)2(OH)2 · 8H2O
Sⓘ MarcasiteFeS2
Sⓘ PyriteFeS2
Sⓘ PyrrhotiteFe1-xS
Sⓘ SphaleriteZnS
Sⓘ Tetrahedrite SubgroupCu6(Cu4C22+)Sb4S12S
Sⓘ Uranopilite(UO2)6(SO4)O2(OH)6 · 14H2O
Sⓘ ZippeiteK3(UO2)4(SO4)2O3(OH) · 3H2O
KPotassium
Kⓘ MuscoviteKAl2(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ⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Caⓘ FluoriteCaF2
Caⓘ ScheeliteCa(WO4)
Caⓘ UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
TiTitanium
Tiⓘ BranneriteUTi2O6
MnManganese
Mnⓘ Tantalite(Mn,Fe)(Ta,Nb)2O6
FeIron
Feⓘ BorniteCu5FeS4
Feⓘ ChalcopyriteCuFeS2
Feⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Feⓘ HematiteFe2O3
Feⓘ MarcasiteFeS2
Feⓘ PyriteFeS2
Feⓘ PyrrhotiteFe1-xS
Feⓘ Tantalite(Mn,Fe)(Ta,Nb)2O6
CuCopper
Cuⓘ BorniteCu5FeS4
Cuⓘ ChalcopyriteCuFeS2
Cuⓘ ChalcociteCu2S
Cuⓘ Cuprite var. ChalcotrichiteCu2O
Cuⓘ CovelliteCuS
Cuⓘ CupriteCu2O
Cuⓘ JohanniteCu(UO2)2(SO4)2(OH)2 · 8H2O
Cuⓘ MalachiteCu2(CO3)(OH)2
Cuⓘ MetazeuneriteCu(UO2)2(AsO4)2 · 8H2O
Cuⓘ Tetrahedrite SubgroupCu6(Cu4C22+)Sb4S12S
Cuⓘ TorberniteCu(UO2)2(PO4)2 · 12H2O
ZnZinc
Znⓘ SphaleriteZnS
AsArsenic
Asⓘ MetazeuneriteCu(UO2)2(AsO4)2 · 8H2O
NbNiobium
Nbⓘ Tantalite(Mn,Fe)(Ta,Nb)2O6
MoMolybdenum
Moⓘ IlsemanniteMo3O8 · nH2O
SbAntimony
Sbⓘ Tetrahedrite SubgroupCu6(Cu4C22+)Sb4S12S
BaBarium
Baⓘ BaryteBaSO4
Baⓘ UranocirciteBa(UO2)2(PO4)2 · 10H2O
TaTantalum
Taⓘ Tantalite(Mn,Fe)(Ta,Nb)2O6
WTungsten
Wⓘ ScheeliteCa(WO4)
AuGold
Auⓘ Native GoldAu
HgMercury
Hgⓘ CinnabarHgS
PbLead
Pbⓘ GalenaPbS
UUranium
Uⓘ AutuniteCa(UO2)2(PO4)2 · 10-12H2O
Uⓘ BranneriteUTi2O6
Uⓘ JohanniteCu(UO2)2(SO4)2(OH)2 · 8H2O
Uⓘ MetazeuneriteCu(UO2)2(AsO4)2 · 8H2O
Uⓘ Uraninite var. PitchblendeUO2
Uⓘ TorberniteCu(UO2)2(PO4)2 · 12H2O
Uⓘ UraniniteUO2
Uⓘ UranocirciteBa(UO2)2(PO4)2 · 10H2O
Uⓘ UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
Uⓘ Uranopilite(UO2)6(SO4)O2(OH)6 · 14H2O
Uⓘ ZippeiteK3(UO2)4(SO4)2O3(OH) · 3H2O

Localities in this Region

USA
USA

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America PlateTectonic Plate
USA

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

Hedlund, D. and Olson, J.C. (1981), Precambrian Geology along Parts of the Gunnison Uplift of Southwestern Colorado, in: Epis, R.C. and Callender, J.F., editors, Western Slope Colorado, New Mexico Geological Society 32nd. Field Conference Guidebook: 267-272.
Quick NavTopCommoditiesMineral ListRock TypesLocalities in RegionOther 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: September 8, 2026 11:30:13 Page updated: February 23, 2026 23:03:37
Go to top of page