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
Unnamed Clay deposit [6], Porters Corner, Granite County, Montana, USA


Locality type:Deposit
Classification
Species:Muscovite
Formula:KAl2(AlSi3O10)(OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Muscovite data
Locality Data:Click here to view Unnamed Clay deposit [6], Porters Corner, Granite County, Montana, USA
Data Identifiers
Mindat Occurrence Record ID:998985
Long-form Identifier:1:3:998985:6
GUID (UUID V4):0
Nearest other occurrences of Muscovite
30.9km (19.2 miles) Clay Deposit SE of the Town of Lost Creek, Lost Creek Mining District, Deer Lodge County, Montana, USA
33.8km (21.0 miles) Potosi Shaft, Rose Mountain Mining District (Gold Creek Mining District), Granite County, Montana, USA
35.7km (22.2 miles) Majestic Claim (Snow Bunny Prospect), Rose Mountain Area, Powell County, Montana, USA
41.8km (26.0 miles) Unnamed Clay deposit [5], Douglas Mountain, Dunkleberg Mining District, Granite County, Montana, USA
48.2km (29.9 miles) Crystal Mountain Fluorspar Mine (Lumberjack Outcrops; Crystal Mountain Mine Retirement Group), Sapphire Mountains Area, Ravalli County, Montana, USA
48.7km (30.3 miles) Unnamed Clay deposit [1], Ramsay, Silver Bow County, Montana, USA
53.9km (33.5 miles) Clay Deposit Near Haskell, Pioneer Mining District (Gold Creek Mining District), Powell County, Montana, USA
54.1km (33.6 miles) Clay Deposit (3), Garrison, Garrison Area, Powell County, Montana, USA
54.7km (34.0 miles) Clay Deposit (2), Garrison, Garrison Area, Powell County, Montana, USA
56.0km (34.8 miles) Clay Deposit, Garrison, Garrison Area, Powell County, Montana, 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 4, 2026 04:46:14
Go to top of page