Vote for your favorite mineral in #MinCup26! - Bournonite vs. Vesuvianite
Cogwheels of bournonite are up against colourful vesuvianite.
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

Caribou Mine group, Grand Island, Caribou Mining District, Boulder County, Colorado, USAi
Regional Level Types
Caribou Mine groupGroup of Mines
Grand IslandIsland
Caribou Mining DistrictMining District
Boulder CountyCounty
ColoradoState
USACountry

This page is currently not sponsored. Click here to sponsor this page.
PhotosMapsSearchMineralogy
02380430017272011465430.jpg
Caribou Vein workings

Caribou Mine group, Grand Island, Caribou Mining District, Boulder County, Colorado, USA
03251810017272088964965.jpg
Remnants of Caribou, Colorado, 4 July 2020

Caribou Mine, Caribou Mine group, Grand Island, Caribou Mining District, Boulder County, Colorado, USA
02184770017272088976582.jpg
Caribou Mine tailings, 4 July 2020

Caribou Mine, Caribou Mine group, Grand Island, Caribou Mining District, Boulder County, Colorado, USA
02380430017272011465430.jpg
Caribou Vein workings

Caribou Mine group, Grand Island, Caribou Mining District, Boulder County, Colorado, USA
07440170017272022368502.jpg
Remnants of Caribou, Colorado, 4 July 2020

Caribou Mine, Caribou Mine group, Grand Island, Caribou Mining District, Boulder County, Colorado, USA
07542490017272022428473.jpg
Caribou Mine tailings, 4 July 2020

Caribou Mine, Caribou Mine group, Grand Island, Caribou Mining District, Boulder County, Colorado, USA
02380430017272011465430.jpg
Caribou Vein workings

Caribou Mine group, Grand Island, Caribou Mining District, Boulder County, Colorado, USA
02881760017272022591023.jpg
Remnants of Caribou, Colorado, 4 July 2020

Caribou Mine, Caribou Mine group, Grand Island, Caribou Mining District, Boulder County, Colorado, USA
Latitude & Longitude (WGS84):
39° 58' 53'' North , 105° 34' 59'' West
Latitude & Longitude (decimal):
39.98139,-105.58333
GRN:
N27W59
Type:
Group of Mines
Köppen climate type:
Dfc : Subarctic climate
Nearest Settlements:
PlacePopulationDistance
Eldora142 (2011)4.0km
Nederland1,520 (2017)6.6km
Bonanza Mountain Estates128 (2011)8.8km
Rollinsville181 (2011)10.0km
Saint Anton Highlands288 (2016)10.9km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Flatirons Mineral ClubBoulder, Colorado27km
Mile High Rock and Mineral SocietyArvada, Colorado47km
Mindat Locality ID:
300296
Long-form identifier:
mindat:1:2:300296:7
GUID (UUID V4):
0
Other/historical names associated with this locality:
Caribou Consolidated Group; Con. Silver Caribou Mines; Consolidated Caribou Silver Mines; Consolidated Caribou Silver Mine


No description has been added for this locality. Can you add one?

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

26 valid minerals.

Rock Types Recorded


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

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Acanthite
Formula: Ag2S
Description: Argentite was reported by Endlich (1878) and Wright (1954). Supergene acanthite with covellite was observed in small fractures and vugs at the Caribou mine by Francis (1987). Raines (1992) discussed the mineralogy at Caribou.
ⓘ Azurite
Formula: Cu3(CO3)2(OH)2
ⓘ Calcite
Formula: CaCO3
ⓘ Cerussite
Formula: PbCO3
ⓘ Chalcopyrite
Formula: CuFeS2
ⓘ Chlorargyrite
Formula: AgCl
ⓘ Chrysotile
Formula: Mg3(Si2O5)(OH)4
ⓘ Covellite
Formula: CuS
ⓘ Dolomite
Formula: CaMg(CO3)2
ⓘ Galena
Formula: PbS
ⓘ Gersdorffite
Formula: NiAsS
ⓘ Jalpaite
Formula: Ag3CuS2
ⓘ Malachite
Formula: Cu2(CO3)(OH)2
ⓘ Native Gold
Formula: Au
ⓘ Native Silver
Formula: Ag
ⓘ Pearceite
Formula: [Ag6As2S7][Ag9CuS4]
ⓘ Polybasite
Formula: [Ag6Sb2S7][Ag9CuS4]
ⓘ Proustite
Formula: Ag3AsS3
ⓘ Pyrargyrite
Formula: Ag3SbS3
ⓘ Pyrite
Formula: FeS2
ⓘ Quartz
Formula: SiO2
ⓘ Quartz var. Chalcedony
Formula: SiO2
ⓘ Siderite
Formula: FeCO3
ⓘ Sphalerite
Formula: ZnS
ⓘ Stephanite
Formula: Ag5SbS4
ⓘ Stromeyerite
Formula: AgCuS
ⓘ 'Tetrahedrite Subgroup'
Formula: Cu6(Cu4C2+2)Sb4S12S
ⓘ Uraninite
Formula: UO2
ⓘ Uraninite var. Pitchblende
Formula: UO2

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘNative Gold1.AA.05Au
ⓘNative Silver1.AA.05Ag
Group 2 - Sulphides and Sulfosalts
ⓘAcanthite2.BA.35Ag2S
ⓘStromeyerite2.BA.40AgCuS
ⓘJalpaite2.BA.45Ag3CuS2
ⓘCovellite2.CA.05aCuS
ⓘSphalerite2.CB.05aZnS
ⓘChalcopyrite2.CB.10aCuFeS2
ⓘGalena2.CD.10PbS
ⓘPyrite2.EB.05aFeS2
ⓘGersdorffite2.EB.25NiAsS
ⓘProustite2.GA.05Ag3AsS3
ⓘPyrargyrite2.GA.05Ag3SbS3
ⓘ'Tetrahedrite Subgroup'2.GB.05Cu6(Cu4C2+2)Sb4S12S
ⓘStephanite2.GB.10Ag5SbS4
ⓘPearceite2.GB.15[Ag6As2S7][Ag9CuS4]
ⓘPolybasite2.GB.15[Ag6Sb2S7][Ag9CuS4]
Group 3 - Halides
ⓘChlorargyrite3.AA.15AgCl
Group 4 - Oxides and Hydroxides
ⓘQuartz
var. Chalcedony		4.DA.05SiO2
ⓘ4.DA.05SiO2
ⓘUraninite
var. Pitchblende		4.DL.05UO2
ⓘ4.DL.05UO2
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
ⓘSiderite5.AB.05FeCO3
ⓘDolomite5.AB.10CaMg(CO3)2
ⓘCerussite5.AB.15PbCO3
ⓘAzurite5.BA.05Cu3(CO3)2(OH)2
ⓘMalachite5.BA.10Cu2(CO3)(OH)2
Group 9 - Silicates
ⓘChrysotile9.00.Mg3(Si2O5)(OH)4

List of minerals for each chemical element

HHydrogen
Hⓘ AzuriteCu3(CO3)2(OH)2
Hⓘ ChrysotileMg3(Si2O5)(OH)4
Hⓘ MalachiteCu2(CO3)(OH)2
CCarbon
Cⓘ AzuriteCu3(CO3)2(OH)2
Cⓘ CalciteCaCO3
Cⓘ CerussitePbCO3
Cⓘ DolomiteCaMg(CO3)2
Cⓘ MalachiteCu2(CO3)(OH)2
Cⓘ SideriteFeCO3
OOxygen
Oⓘ AzuriteCu3(CO3)2(OH)2
Oⓘ CalciteCaCO3
Oⓘ CerussitePbCO3
Oⓘ Quartz var. ChalcedonySiO2
Oⓘ ChrysotileMg3(Si2O5)(OH)4
Oⓘ DolomiteCaMg(CO3)2
Oⓘ MalachiteCu2(CO3)(OH)2
Oⓘ Uraninite var. PitchblendeUO2
Oⓘ QuartzSiO2
Oⓘ SideriteFeCO3
Oⓘ UraniniteUO2
MgMagnesium
Mgⓘ ChrysotileMg3(Si2O5)(OH)4
Mgⓘ DolomiteCaMg(CO3)2
SiSilicon
Siⓘ Quartz var. ChalcedonySiO2
Siⓘ ChrysotileMg3(Si2O5)(OH)4
Siⓘ QuartzSiO2
SSulfur
Sⓘ AcanthiteAg2S
Sⓘ ChalcopyriteCuFeS2
Sⓘ CovelliteCuS
Sⓘ GalenaPbS
Sⓘ GersdorffiteNiAsS
Sⓘ JalpaiteAg3CuS2
Sⓘ Pearceite[Ag6As2S7][Ag9CuS4]
Sⓘ Polybasite[Ag6Sb2S7][Ag9CuS4]
Sⓘ ProustiteAg3AsS3
Sⓘ PyrargyriteAg3SbS3
Sⓘ PyriteFeS2
Sⓘ SphaleriteZnS
Sⓘ StephaniteAg5SbS4
Sⓘ StromeyeriteAgCuS
Sⓘ Tetrahedrite SubgroupCu6(Cu4C22+)Sb4S12S
ClChlorine
Clⓘ ChlorargyriteAgCl
CaCalcium
Caⓘ CalciteCaCO3
Caⓘ DolomiteCaMg(CO3)2
FeIron
Feⓘ ChalcopyriteCuFeS2
Feⓘ PyriteFeS2
Feⓘ SideriteFeCO3
NiNickel
Niⓘ GersdorffiteNiAsS
CuCopper
Cuⓘ AzuriteCu3(CO3)2(OH)2
Cuⓘ ChalcopyriteCuFeS2
Cuⓘ CovelliteCuS
Cuⓘ JalpaiteAg3CuS2
Cuⓘ MalachiteCu2(CO3)(OH)2
Cuⓘ Pearceite[Ag6As2S7][Ag9CuS4]
Cuⓘ Polybasite[Ag6Sb2S7][Ag9CuS4]
Cuⓘ StromeyeriteAgCuS
Cuⓘ Tetrahedrite SubgroupCu6(Cu4C22+)Sb4S12S
ZnZinc
Znⓘ SphaleriteZnS
AsArsenic
Asⓘ GersdorffiteNiAsS
Asⓘ Pearceite[Ag6As2S7][Ag9CuS4]
Asⓘ ProustiteAg3AsS3
AgSilver
Agⓘ AcanthiteAg2S
Agⓘ ChlorargyriteAgCl
Agⓘ JalpaiteAg3CuS2
Agⓘ Pearceite[Ag6As2S7][Ag9CuS4]
Agⓘ Polybasite[Ag6Sb2S7][Ag9CuS4]
Agⓘ ProustiteAg3AsS3
Agⓘ PyrargyriteAg3SbS3
Agⓘ Native SilverAg
Agⓘ StephaniteAg5SbS4
Agⓘ StromeyeriteAgCuS
SbAntimony
Sbⓘ Polybasite[Ag6Sb2S7][Ag9CuS4]
Sbⓘ PyrargyriteAg3SbS3
Sbⓘ StephaniteAg5SbS4
Sbⓘ Tetrahedrite SubgroupCu6(Cu4C22+)Sb4S12S
AuGold
Auⓘ Native GoldAu
PbLead
Pbⓘ CerussitePbCO3
Pbⓘ GalenaPbS
UUranium
Uⓘ Uraninite var. PitchblendeUO2
Uⓘ UraniniteUO2

Other Databases

Link to USGS MRDS:10017083

Localities in this Region

USA

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

(2005) Mineral Resources Data System (MRDS), US Geological Survey.
Quick NavTopCommoditiesMineral ListRock TypesOther DatabasesLocalities 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 4, 2026 07:54:52 Page updated: July 25, 2026 14:52:01
Go to top of page