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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Cuspidine from
Commercial Quarry, Sky Blue Hill, Crestmore quarries, Crestmore, Jurupa Valley, Riverside County, California, USA


09003010017369368781818.jpg
Cuspidine

Commercial Quarry, Sky Blue Hill, Crestmore quarries, Crestmore, Jurupa Valley, Riverside County, California, USA
09003010017369368781818.jpg
Cuspidine

Commercial Quarry, Sky Blue Hill, Crestmore quarries, Crestmore, Jurupa Valley, Riverside County, California, USA
09062550017271979885634.jpg
Cuspidine

Commercial Quarry, Sky Blue Hill, Crestmore quarries, Crestmore, Jurupa Valley, Riverside County, California, USA
Locality type:Quarry
Classification
Species:Cuspidine
Formula:Ca8(Si2O7)2F4
Comments:Occurs in metamorphic rock. Associated with weathered monticellite.
Colour:Gray.
Abundance at site:Rare
Confirmation
Validity:Believed Valid
Associated Minerals:
Associates:Monticellite
Vesuvianite
Data
Mineral Data:Click here to view Cuspidine data
Locality Data:Click here to view Commercial Quarry, Sky Blue Hill, Crestmore quarries, Crestmore, Jurupa Valley, Riverside County, California, USA
Data Identifiers
Mindat Occurrence Record ID:151335
Long-form Identifier:1:3:151335:6
GUID (UUID V4):0
References
Tilley, C. E. (1947) Cuspidine from dolomite contact skarns, Broadford, Skye. Mineralogical Magazine and Journal of the Mineralogical Society, 28 (197) 90-95 doi:10.1180/minmag.1947.028.197.03
Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc.
 
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