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

Gypsum from
Opal Hill Mine, Mule Mountains District (Hodges Mountain District), Riverside County, California, USA


Locality type:Mine
Classification
Species:Gypsum
Formula:CaSO4 · 2H2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Gypsum data
Locality Data:Click here to view Opal Hill Mine, Mule Mountains District (Hodges Mountain District), Riverside County, California, USA
Data Identifiers
Mindat Occurrence Record ID:214531
Long-form Identifier:1:3:214531:0
GUID (UUID V4):0
Nearest other occurrences of Gypsum
7.2km (4.5 miles) ⓘBlanc placer, Thumb Peak, Palo Verde Mining District, Palo Verde Mountains, Imperial County, California, USA
13.5km (8.4 miles) ⓘHauser beds (Hauser Geode beds; Hauser Beds Mine), Thumb Peak, Palo Verde Mining District, Palo Verde Mountains, Imperial County, California, USA
15.0km (9.3 miles) ⓘCone Mountain prospect (Cone Point prospect), Black Hills, Imperial County, California, USA
40.9km (25.4 miles) ⓘMcKnight Mine (Lucky Star Mine; Lucky Star claims), Glamis, Chocolate Mountains Mining District, Chocolate Mountains, Imperial County, California, USA
41.1km (25.5 miles) ⓘCrown Uranium prospect (Crown Uranium group; Tenn-Cal claims; Tenn-Cal group), Glamis, Chocolate Mountains Mining District, Chocolate Mountains, Imperial County, California, USA
42.3km (26.3 miles) ⓘLangdon Mine (Langdon deposit; Maybery and Brown; Dioxide group; Hauser-Martin-Cheeseborough; Arentz-Perkins), Midland, Little Maria Mountains, Riverside County, California, USA
43.7km (27.2 miles) ⓘGarbutt & Orcutt deposit (Carbutt & Orcutt deposit; Standard Gypsum claims), Midland, Little Maria Mountains, Riverside County, California, USA
45.2km (28.1 miles) ⓘMaria Mountain deposits (Maria Mtns deposit), Midland, Little Maria Mountains, Riverside County, California, USA
45.4km (28.2 miles) ⓘDives Mine, Silver Mining District, La Paz County, Arizona, USA
46.2km (28.7 miles) ⓘRed Cloud Mine, Silver Mining District, La Paz County, Arizona, 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 3, 2026 13:46:37
Go to top of page