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

Muscovite from
Bob Ingersoll Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA


03610290017364738731166.jpg
Muscovite, etc.

Bob Ingersoll Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
03610290017364738731166.jpg
Muscovite, etc.

Bob Ingersoll Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
06192100017272016539988.jpg
Muscovite, etc.

Bob Ingersoll Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
Locality type:Mine
Classification
Species:Muscovite
Formula:KAl2(AlSi3O10)(OH)2
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Elbaite18
Tourmaline6
- var Indicolite1
Triphylite1
Schorl1
Quartz1
Uraninite1
Fourmarierite1
Albite1
Data
Mineral Data:Click here to view Muscovite data
Locality Data:Click here to view Bob Ingersoll Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
Data Identifiers
Mindat Occurrence Record ID:212396
Long-form Identifier:1:3:212396:7
GUID (UUID V4):0
Nearest other occurrences of Muscovite
1.6km (1.0 miles) ⓘLegal Tender Group, Keystone Gold Mining District, Pennington County, South Dakota, USA
1.7km (1.1 miles) ⓘSitting Bull pegmatite, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
2.1km (1.3 miles) ⓘDan Patch Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
3.0km (1.9 miles) ⓘHoly Terror Mine, Keystone Gold Mining District, Pennington County, South Dakota, USA
3.5km (2.1 miles) ⓘDan Patch West Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
3.5km (2.2 miles) ⓘPeerless Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
4.1km (2.6 miles) ⓘMartha Washington Occurrence (C. H. Kammon), Hill City Mining District, Pennington County, South Dakota, USA
4.2km (2.6 miles) ⓘMonte Carlo Prospect, Keystone Mining District, Pennington County, South Dakota, USA
4.4km (2.7 miles) ⓘEtta Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
4.5km (2.8 miles) ⓘNickel Plate Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
References
Smith, Arthur E., Fritzsch, Eric (2000) SOUTH DAKOTA. Rocks & Minerals, 75 (3) 156-169 doi:10.1080/00357520009605635
 
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 02:54:06
Go to top of page