Vote for your favorite mineral in #MinCup26! - Cuprite vs. Orpiment
It's a fiery match of vibrant red Cuprite and just as saturated orange Orpiment battle for 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

Glaucophane from
Melitta, Santa Rosa, Sonoma County, California, USA


Locality type:Occurrence
Classification
Species:Glaucophane
Formula:◻Na2(Mg3Al2)Si8O22(OH)2
Comments:Occurs as glaucophane gneiss.
Confirmation
Validity:Believed Valid
Associated Minerals:
Associates:Margarite
Data
Mineral Data:Click here to view Glaucophane data
Locality Data:Click here to view Melitta, Santa Rosa, Sonoma County, California, USA
Data Identifiers
Mindat Occurrence Record ID:639929
Long-form Identifier:1:3:639929:0
GUID (UUID V4):0
Nearest other occurrences of Glaucophane
28.2km (17.5 miles) ⓘCamp Meeker, Coast Range, Sonoma County, California, USA
29.5km (18.3 miles) ⓘValley Ford, Sonoma County, California, USA
30.3km (18.8 miles) ⓘEbabias Creek, Valley Ford, Sonoma County, California, USA
31.6km (19.6 miles) ⓘGuerneville, Guerneville Mining District, Coast Range, Sonoma County, California, USA
32.0km (19.9 miles) ⓘWall Street Mine (Cincinnati Mine; Nevada Mine), Castle Rock Springs, East Mayacmas Mining District, Lake County, California, USA
40.9km (25.4 miles) ⓘWard Creek [1], Cazadero, Coast Range, Sonoma County, California, USA
42.5km (26.4 miles) ⓘWard Creek [2], Cazadero, Coast Range, Sonoma County, California, USA
42.8km (26.6 miles) ⓘMouth of the Russian River area, Jenner, Russian River Mining District, Coast Range, Sonoma County, California, USA
44.2km (27.5 miles) ⓘNicasio, Marin County, California, USA
59.4km (36.9 miles) ⓘRosenhahnite occurrence, Russian River, Cloverdale area, Mendocino County, California, USA
References
Munteanu-Murgoci, G. (1906). Contribution to the classification of the amphiboles; on some glaucophane schists, syenites, etc.: University of California, Department of Geological Sciences Bulletin: 4: 396 pp.
Murdoch, Joseph; Webb, Robert Wallace (1966) Minerals of California, Centennial Volume (1866-1966) - California Division of Mines and Geology, Bulletin 189. California Division of Mines and Geology. 559 pp.
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 5, 2026 03:24:28
Go to top of page