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

Hornblende Root Name Group from
Copper King Mine (Claims: Black Hawk No. 1; Black Hawk No. 2), Prairie Divide Mining District (St. Cloud Mining District), Larimer County, Colorado, USA


Locality type:Mine
Classification
Species:'Hornblende Root Name Group' (not an IMA approved species)
Formula:◻Ca2(C42+C3+)(AlSi7O22)W2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Hornblende Root Name Group data
Locality Data:Click here to view Copper King Mine (Claims: Black Hawk No. 1; Black Hawk No. 2), Prairie Divide Mining District (St. Cloud Mining District), Larimer County, Colorado, USA
Data Identifiers
Mindat Occurrence Record ID:491181
Long-form Identifier:1:3:491181:4
GUID (UUID V4):0
Nearest other occurrences of Hornblende Root Name Group
23.7km (14.7 miles) ⓘHome, Home Mining District, Larimer County, Colorado, USA
43.5km (27.0 miles) ⓘYellow Bird Mine, Silver Crown Mining District, Laramie County, Wyoming, USA
68.0km (42.3 miles) ⓘMaudem Group Mine, Keystone Mining District - Douglas Creek Mining District, Medicine Bow Mountains, Albany County, Wyoming, USA
73.5km (45.7 miles) ⓘKeystone Mine, Keystone Mining District - Douglas Creek Mining District, Medicine Bow Mountains, Albany County, Wyoming, USA
73.6km (45.7 miles) ⓘCuprite Mine, Keystone Mining District - Douglas Creek Mining District, Medicine Bow Mountains, Albany County, Wyoming, USA
74.4km (46.2 miles) ⓘAlbany Mine, Keystone Mining District - Douglas Creek Mining District, Medicine Bow Mountains, Albany County, Wyoming, USA
75.8km (47.1 miles) ⓘDouglas Mine (Morning Star claims 1868 & 1871; Douglas Gold and Copper Company), Keystone Mining District - Douglas Creek Mining District, Medicine Bow Mountains, Albany County, Wyoming, USA
77.7km (48.3 miles) ⓘNew Rambler mine (Rambler Mine; Holmes Mine; Electrolytic Mine; Great Rambler Mine), New Rambler Mining District, Albany County, Wyoming, USA
78.2km (48.6 miles) ⓘUnnamed Au mine, Keystone Mining District - Douglas Creek Mining District, Medicine Bow Mountains, Albany County, Wyoming, USA
92.9km (57.7 miles) ⓘWindy Gap, Grand County, Colorado, USA
References
 
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 10:24:56
Go to top of page