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

Pyrolusite from
Josephson prospect, Yankee Hill, Butte County, California, USA


Locality type:Prospect
Classification
Species:Pyrolusite
Formula:Mn4+O2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Pyrolusite data
Locality Data:Click here to view Josephson prospect, Yankee Hill, Butte County, California, USA
Data Identifiers
Mindat Occurrence Record ID:322808
Long-form Identifier:1:3:322808:1
GUID (UUID V4):0
Nearest other occurrences of Pyrolusite
35.1km (21.8 miles) ⓘSunny Park prospect (Powell prospect; Tade prospect), Clipper Mills, Clipper Mills Mining District, Butte County, California, USA
64.3km (39.9 miles) ⓘLakeview Valley VI Mine (Western Manganese Mine; Noble lease; EW; Braito Mine; Dixie Creek; Feather River; Iron Dyke Mine), Moccasin, Plumas County, California, USA
65.9km (40.9 miles) ⓘLost Soldier deposit (Lost Soldier Mine), Mount Hough, Plumas County, California, USA
66.4km (41.3 miles) ⓘCrystal Lake Mine (Mount Hough Mine; Myton Mine; Kloppenberg Mine), Mount Hough, Plumas County, California, USA
67.4km (41.9 miles) ⓘCollins Pine Manganese deposit, Grizzly Peak, Plumas County, California, USA
67.7km (42.1 miles) ⓘNorth Banner Consolidated Mine (North Banner Quartz Mine; North Banner Cons.; North Banner Co; North Banner Qtz), Lava Cap-Banner-Central group (Central Consolidated; South Banner; North Banner), Banner Mountain (Banner Hill), Nevada City Mining District, Nevada County, California, USA
77.8km (48.3 miles) ⓘRyan prospect (Ryan Bartholf & Veach; You Bet; Midway claim; Negro Heaven claim; Bluebird claim), You Bet (Chalk Bluffs), You Bet Mining District, Nevada County, California, USA
78.0km (48.5 miles) ⓘManga-Chrome Mine (Manga Chrome; Magna-Chrome Mine; Duggan Mine; Steams and Owens [?]), Limekiln, Spenceville Mining District, Nevada County, California, USA
85.3km (53.0 miles) ⓘLloyd prospect, Weimar, Colfax Mining District (Illinois Mining District), Placer County, California, USA
90.6km (56.3 miles) ⓘGold Hill Mine (Crown Point Mine), Yankee Jims, Forest Hill Mining District, Placer County, California, USA
References
Trask, Parker Davies (1950) Geologic description of the manganese deposits of California. California Division of Mines Bulletin 152, 378 pp.: 36
Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc.
 
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 14:02:54
Go to top of page