Vote for your favorite mineral in #MinCup26! - Quartz vs. Asagiite
It's a classic vs a newbie as the most common named mineral in the crust Quartz is up against an exceedingly-rare sea foam-green mineral discovered just a few years ago Asagiite.
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
Breccia Occurrence (south of Snowcap Mountain), McGrath Mining District, Bethel Census Area, Alaska, USA


Locality type:Occurrence
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 Breccia Occurrence (south of Snowcap Mountain), McGrath Mining District, Bethel Census Area, Alaska, USA
Data Identifiers
Mindat Occurrence Record ID:1001314
Long-form Identifier:1:3:1001314:6
GUID (UUID V4):0
Nearest other occurrences of Muscovite
18.4km (11.4 miles) West Chilligan Occurrence, Redoubt Mining District, Kenai Peninsula Borough, Alaska, USA
19.2km (11.9 miles) Unnamed Occurrence (ARDF - LH029; upper Chilligan River), Redoubt Mining District, Kenai Peninsula Borough, Alaska, USA
26.0km (16.1 miles) Styx River Occurrence, McGrath Mining District, Bethel Census Area, Alaska, USA
39.0km (24.3 miles) Unnamed Occurrence (ARDF - LH018; near Styx River), McGrath Mining District, Bethel Census Area, Alaska, USA
39.9km (24.8 miles) Terra Prospect, McGrath Mining District, Bethel Census Area, Alaska, USA
40.3km (25.0 miles) Jimmy Lake Occurrence, McGrath Mining District, Bethel Census Area, Alaska, USA
40.4km (25.1 miles) Unnamed Occurrence (ARDF - LH014; near Styx River), McGrath Mining District, Bethel Census Area, Alaska, USA
60.1km (37.3 miles) Mt. Estelle Prospects, Yentna Mining District, Matanuska-Susitna Borough, Alaska, USA
83.6km (51.9 miles) Unnamed Prospect (ARDF - TL064; near Round Mtn), Yentna Mining District, Matanuska-Susitna Borough, Alaska, USA
99.0km (61.5 miles) Unnamed Occurrence (ARDF - MG029; on tributary to Middle Fork of Kuskokwim River), Yukon-Koyukuk Census Area, Alaska, 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 6, 2026 01:06:25
Go to top of page