Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of 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

Magnesite from
Ednor Steatite Locality, Ednor, Montgomery County, Maryland, USA


Classification
Species:Magnesite
Formula:MgCO3
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Magnesite data
Locality Data:Click here to view Ednor Steatite Locality, Ednor, Montgomery County, Maryland, USA
Data Identifiers
Mindat Occurrence Record ID:207342
Long-form Identifier:1:3:207342:2
GUID (UUID V4):0
Nearest other occurrences of Magnesite
20.1km (12.5 miles) ⓘEtchison Mine, Montgomery County, Maryland, USA
22.4km (13.9 miles) ⓘHunting Hill Quarry, Rockville, Montgomery County, Maryland, USA
28.8km (17.9 miles) ⓘLord Baltimore Drive Quartz occurrence area, Windsor Mill, Baltimore County, Maryland, USA
32.8km (20.4 miles) ⓘWeir Mine, Holbrook, Baltimore County, Maryland, USA
33.0km (20.5 miles) ⓘChoate Mine, Owings Mills, Baltimore County, Maryland, USA
33.4km (20.7 miles) ⓘHarris Mine, Holbrook, Baltimore County, Maryland, USA
33.6km (20.9 miles) ⓘUnnamed Chromite prospect 13 [of Pearre & Heyl], Owings Mills, Baltimore County, Maryland, USA
35.8km (22.3 miles) ⓘDelight Quarry (Soldier's Delight Quarry; Dyer Quarry), Soldiers' Delight ridge, Delight, Baltimore County, Maryland, USA
38.6km (24.0 miles) ⓘDiscovery workings (Main workings), Bare Hills, Baltimore County, Maryland, USA
38.7km (24.1 miles) ⓘUnnamed Chromite prospects, Bare Hills, Baltimore County, Maryland, USA
References
Bernstein, Lawrence R. (1980) Minerals of the Washington, D.C. Area - Issue 5 of Educational series, Maryland Geological Survey. Department of Natural Resources, Maryland Geological Survey. p.1-148.
 
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 3, 2026 09:54:14
Go to top of page