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

Psilomelane from
Corral Hollow Manganese deposits, Corral Hollow, Mendenhall Springs, Livermore Mining District (Tesla District), Alameda County, California, USA


Locality type:Deposit
Classification
Species:'Psilomelane' (not an IMA approved species)
Comments:Principal mineral in these deposits.
Confirmation
Validity:Believed Valid
Associated Minerals:
Associates:Pyrolusite
Data
Mineral Data:Click here to view Psilomelane data
Locality Data:Click here to view Corral Hollow Manganese deposits, Corral Hollow, Mendenhall Springs, Livermore Mining District (Tesla District), Alameda County, California, USA
Data Identifiers
Mindat Occurrence Record ID:666697
Long-form Identifier:1:3:666697:2
GUID (UUID V4):0
Nearest other occurrences of Psilomelane
0.2km (0.1 miles) ⓘDewhirst Mine, Mendenhall Springs, Livermore Mining District (Tesla District), Alameda County, California, USA
0.7km (0.5 miles) ⓘNewman Estacia property, Cedar Mountain, Cedar Mountain Mining District, Alameda County, California, USA
2.6km (1.6 miles) ⓘBeraudiere Mine, Mendenhall Springs, Livermore Mining District (Tesla District), Alameda County, California, USA
3.0km (1.9 miles) ⓘBlack Jack Mine, Mendenhall Springs, Livermore Mining District (Tesla District), Alameda County, California, USA
3.1km (1.9 miles) ⓘAlameda Company No. 39 prospect (Alameda County #39), Mendenhall Springs, Livermore Mining District (Tesla District), Alameda County, California, USA
3.8km (2.3 miles) ⓘNelson Bailey Mine (Nelson lease; Bailey Mine; Newhall Mine), Mendenhall Springs, Livermore Mining District (Tesla District), Alameda County, California, USA
3.8km (2.4 miles) ⓘCamp 9 deposit (Camp 9 Merchant; Cummings), Mendenhall Springs, Livermore Mining District (Tesla District), Alameda County, California, USA
5.8km (3.6 miles) ⓘTaylor and Pitcher Mine, Tesla, Livermore Mining District (Tesla District), Alameda County, California, USA
6.2km (3.8 miles) ⓘKelly Mine, Mendenhall Springs, Livermore Mining District (Tesla District), Alameda County, California, USA
12.3km (7.6 miles) ⓘMahoney Mine (Mahoney No. 1 Mine; Johnson lease; Johnson Mine; Doak Mine), Castle Rock, Ladd-Buckeye Mining District, San Joaquin County, California, USA
References
San Francisco field district: California Mining Bureau. Report 39: 53-57
Watts, Wm. L. (1893), Alameda, Colusa, Del Norte, Fresno, Glenn, Humboldt, Marin, Mendocino, Merced, Placer, Sacramento, Santa Clara, San Joaquin, Sonoma, Stanislaus, Sutter, Kern, Lake, Contra Costa, Tehama, Tulare Counties California Mining Bureau. Report 11: 121
Huguenin, Emile & W.O. Castello (1921), Alameda, Contra Costa, San Francisco, San Mateo, Santa Clara, Santa Cruz Counties: California Mining Bureau. Report 17: 26-28
Laizure, Clyde McK (1943), Discoveries in the strategic minerals
 
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 15:52:06
Go to top of page