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

Rhodonite from
Sylvester prospect (Sylvester deposit), Williams Point, Klamath Mountains, Siskiyou County, California, USA


Locality type:Prospect
Classification
Species:Rhodonite
Formula:CaMn3Mn[Si5O15]
Comments:Occurs as relict material.
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Rhodonite data
Locality Data:Click here to view Sylvester prospect (Sylvester deposit), Williams Point, Klamath Mountains, Siskiyou County, California, USA
Data Identifiers
Mindat Occurrence Record ID:334656
Long-form Identifier:1:3:334656:3
GUID (UUID V4):0
Nearest other occurrences of Rhodonite
5.6km (3.5 miles) ⓘUnnamed Gemstone occurrence [4], Greens Bar placer, Happy Camp, Klamath Mountains, Siskiyou County, California, USA
7.9km (4.9 miles) ⓘCrawford prospect, Grider Ridge, Klamath Mountains, Siskiyou County, California, USA
15.0km (9.3 miles) ⓘThe Manganese and Rhodonite Mine (Rhodonite claim), Jackson Peak, Klamath Mountains, Siskiyou County, California, USA
18.1km (11.2 miles) ⓘEverill prospects (Everill deposit), Granite Point, Klamath River Mining District, Klamath Mountains, Siskiyou County, California, USA
18.5km (11.5 miles) ⓘHuey prospect (Huey deposit), Deadman Point, Klamath Mountains, Siskiyou County, California, USA
29.2km (18.2 miles) ⓘLarkspur Occurrence (Low Gap), Whisky Peak, Josephine County, Oregon, USA
30.5km (19.0 miles) ⓘLow Gap Claim, Josephine County, Oregon, USA
35.9km (22.3 miles) ⓘJackpot No. 2 Occurrence, Waldo Mining District, Josephine County, Oregon, USA
52.8km (32.8 miles) ⓘIron Occurrence (MRDS - 10036495), Upper Applegate Mining District, Jackson County, Oregon, USA
54.1km (33.6 miles) ⓘUnnamed Mn occurrence [4], Sawyers Bar, Liberty Mining District, Klamath Mountains, Siskiyou County, California, USA
References
Trask, Parker Davies (1950) Geologic description of the manganese deposits of California. California Division of Mines Bulletin 152, 378 pp.: 271-280
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 10:17:34
Go to top of page