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

Ulexite from
Monte Blanco Mine, Monte Blanco, Black Mountains, Amargosa Range, Inyo County, California, USA


Locality type:Mine
Classification
Species:Ulexite
Formula:NaCa[B5O6(OH)6] · 5H2O
Comments:Occurs as large compact masses with colemanite.
Confirmation
Validity:Believed Valid
Associated Minerals:
Associates:Colemanite
Data
Mineral Data:Click here to view Ulexite data
Locality Data:Click here to view Monte Blanco Mine, Monte Blanco, Black Mountains, Amargosa Range, Inyo County, California, USA
Data Identifiers
Mindat Occurrence Record ID:11342
Long-form Identifier:1:3:11342:9
GUID (UUID V4):0
Nearest other occurrences of Ulexite
0.7km (0.4 miles) ⓘCorkscrew Canyon Mine, Ryan, Furnace Creek Mining District (Furnace Creek Borate Mining District), Inyo County, California, USA
0.9km (0.5 miles) ⓘCorkscrew Diversion Channel occurrence, Mouth of Corkscrew Canyon area, Ryan, Furnace Creek Mining District (Furnace Creek Borate Mining District), Inyo County, California, USA
1.8km (1.1 miles) ⓘMott prospect (Mott Colemanite prospect; Mott open cut), Twenty Mule Team Canyon, Furnace Creek Mining District (Furnace Creek Borate Mining District), Inyo County, California, USA
2.3km (1.4 miles) ⓘMeridian claim, Twenty Mule Team Canyon, Furnace Creek Mining District (Furnace Creek Borate Mining District), Inyo County, California, USA
2.3km (1.4 miles) ⓘSouth Meridian claim, Twenty Mule Team Canyon, Furnace Creek Mining District (Furnace Creek Borate Mining District), Inyo County, California, USA
6.0km (3.7 miles) ⓘInyo Mine (Inyo prospect), Ryan, Furnace Creek Mining District (Furnace Creek Borate Mining District), Inyo County, California, USA
6.9km (4.3 miles) ⓘBoraxo Mine, Ryan, Furnace Creek Mining District (Furnace Creek Borate Mining District), Inyo County, California, USA
7.6km (4.7 miles) ⓘHard Scramble claim, Ryan, Furnace Creek Mining District (Furnace Creek Borate Mining District), Inyo County, California, USA
8.5km (5.3 miles) ⓘBillie Mine, Ryan, Furnace Creek Mining District (Furnace Creek Borate Mining District), Inyo County, California, USA
9.3km (5.8 miles) ⓘSigma Mine (White Monster Mine; Sigma-White Monster Mine), Ryan, Furnace Creek Mining District (Furnace Creek Borate Mining District), Inyo County, California, USA
References
Foshag, William Frederick (1924), The world’s biggest borax deposits (California and Nevada): Engineering & Mining Journal: 118: 420
Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 376.
 
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 11:54:18
Go to top of page