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

Chromium-bearing Clinochlore from
Cyclone Gap Mine (Mammoth Mine), El Capitan, Klamath Mountains, Siskiyou County, California, USA


Locality type:Mine
Classification
Species:Clinochlore var: Chromium-bearing Clinochlore
Formula:Mg5(Al,Cr)2Si3O10(OH)8
Confirmation
Validity:Believed Valid
Associated Minerals:
Associates:Uvarovite
Data
Mineral Data:Click here to view Chromium-bearing Clinochlore data
Locality Data:Click here to view Cyclone Gap Mine (Mammoth Mine), El Capitan, Klamath Mountains, Siskiyou County, California, USA
Data Identifiers
Mindat Occurrence Record ID:667828
Long-form Identifier:1:3:667828:9
GUID (UUID V4):0
Nearest other occurrences of Chromium-bearing Clinochlore
5.7km (3.5 miles) ⓘDoe Flat Chromite Mine (Comeback claim; Doe Flat claim), Youngs Valley group, Bear Mountain, Klamath Mountains, Siskiyou County, California, USA
23.9km (14.8 miles) ⓘCamp Eight Mine (Camp 8 claim; Camp 8 group; St. Patrick claim), Gordon Mountain, Klamath Mountains, Del Norte County, California, USA
24.0km (14.9 miles) ⓘGrumpy claim (Grumpy Mine; Grumpy and Stevens Mine [?]), Gordon Mountain, Klamath Mountains, Del Norte County, California, USA
28.3km (17.6 miles) ⓘBrown Mine (High Plateau Browns Mine), High Plateau Mountain, Rockland, Diamond Creek Mining District, Klamath Mountains, Del Norte County, California, USA
28.6km (17.8 miles) ⓘHigh Plateau Mine, Gasquet, Klamath Mountains, Del Norte County, California, USA
29.0km (18.0 miles) ⓘBlackjack deposit, Gasquet, Klamath Mountains, Del Norte County, California, USA
29.5km (18.3 miles) ⓘAngela Chromite Mine (Angela deposit), Gasquet, Klamath Mountains, Del Norte County, California, USA
31.7km (19.7 miles) ⓘFrench Mine, Cant Hook Mountain, Klamath Mountains, Del Norte County, California, USA
33.0km (20.5 miles) ⓘBig Five Mine (Inman No. 5 Mine), Little Rattlesnake Mountain, Klamath Mountains, Del Norte County, California, USA
33.1km (20.5 miles) ⓘOld Doe Mine, Little Rattlesnake Mountain, Klamath Mountains, Del Norte County, California, USA
References
Rynearson, Garn Arthur & Clay T. Smith (1940), Chromite deposits in the Seiad quadrangle, Siskiyou County, California: USGS Bulletin 922-J: 304
Wells, F.G. and Cater, F.W. (1950) Chromite deposits of Siskiyou County, California. California Division Mines Bulletin 134, part 1, chapter 2: 122-126
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 09:01:11
Go to top of page