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!
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Borax from
Borate (Borate Camp), Pacific Mine (Pacific Coast Borax Company properties; Borate; Borate Colemanite Mines; Calico; Old Borate; Pacific Coast Borax Co. workings), Calico, Calico District (Daggett District; Calico-Daggett area), Calico Mts (Calico Hills), San Bernardino County, California, USA


Classification
Species:Borax
Formula:Na2(B4O5)(OH)4 · 8H2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Borax data
Locality Data:Click here to view Borate (Borate Camp), Pacific Mine (Pacific Coast Borax Company properties; Borate; Borate Colemanite Mines; Calico; Old Borate; Pacific Coast Borax Co. workings), Calico, Calico District (Daggett District; Calico-Daggett area), Calico Mts (Calico Hills), San Bernardino County, California, USA
Data Identifiers
Mindat Occurrence Record ID:650430
Long-form Identifier:1:3:650430:4
GUID (UUID V4):0
References
Bailey, Gilbert E. (1902) The Saline Deposits of California. Bulletin 24. California State Mining Bureaup.56
Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 109.
 
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