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

Pyrolusite from
Pioneer Mine (Tolbard Mine), Whedon claims, Midway Well, Paymaster Mining District, Chocolate Mountains, Imperial County, California, USA


Locality type:Mine
Classification
Species:Pyrolusite
Formula:Mn4+O2
Confirmation
Validity:Believed Valid
Associated Minerals:
Associates:Manganite
Data
Mineral Data:Click here to view Pyrolusite data
Locality Data:Click here to view Pioneer Mine (Tolbard Mine), Whedon claims, Midway Well, Paymaster Mining District, Chocolate Mountains, Imperial County, California, USA
Data Identifiers
Mindat Occurrence Record ID:645446
Long-form Identifier:1:3:645446:3
GUID (UUID V4):0
Nearest other occurrences of Pyrolusite
0.5km (0.3 miles) ⓘVirginia Dare deposit (E. J. Beutler Mining claims; E.J. Beutler claims; Valentine Nos. 1 and 2 claims; Virginia Dare Nos. 1 and 2 claims; Bundle of Sticks Nos. 1 and 2 claims), Midway Well, Paymaster Mining District, Chocolate Mountains, Imperial County, California, USA
3.5km (2.2 miles) ⓘTurtle prospect (Jet Black deposit; Hodges Manganese group; Hodges group of claims), Paymaster Landing, Paymaster Mining District, Chocolate Mountains, Imperial County, California, USA
16.3km (10.1 miles) ⓘLugo Mine (American No. 3; Palo Verde Mine; Lost Donkey Mine; Jack Ass Mine; McIntyre Manganese deposit; McIntyre-Lugo), Palo Verde Peak, Palo Verde Mining District, Palo Verde Mountains, Imperial County, California, USA
17.5km (10.9 miles) ⓘPeggy B Mine, Trigo Mountains Mining District (Cibola Mining District), La Paz County, Arizona, USA
20.1km (12.5 miles) ⓘBlack Diamond Mine group, Hidden Valley, U.S. Army Yuma Proving Grounds, Trigo Mountains Mining District (Cibola Mining District), La Paz County, Arizona, USA
21.7km (13.5 miles) ⓘClip Mine, Clip, Hidden Valley, Silver Mining District, La Paz County, Arizona, USA
21.9km (13.6 miles) ⓘRed Cloud Mine, Silver Mining District, La Paz County, Arizona, USA
22.2km (13.8 miles) ⓘDives Mine, Silver Mining District, La Paz County, Arizona, USA
22.6km (14.0 miles) ⓘPapago Mine, Black Rock Wash, Silver Mining District, La Paz County, Arizona, USA
22.8km (14.2 miles) ⓘMandan Mine, Silver Mining District, La Paz County, Arizona, USA
References
Tucker, W. Burling (1926), Imperial, Inyo Counties: California Mining Bureau. Report 22: 226
Hadley, Jarvis Bardwell (1942), Manganese deposits in the Paymaster mining district, Imperial County, California: USGS Bulletin 931-S: 465
Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 303.
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 3, 2026 16:54:49
Go to top of page