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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Hydromagnesite from
Herman Akers claim, Coalinga, Fresno County, California, USA


Locality type:Claim
Classification
Species:Hydromagnesite
Formula:Mg5(CO3)4(OH)2 · 4H2O
Comments:Occurs as concretions to 2.5 cm thick on weathering surfaces of the serpentine asbestos bodies.
Colour:White
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Hydromagnesite data
Locality Data:Click here to view Herman Akers claim, Coalinga, Fresno County, California, USA
Data Identifiers
Mindat Occurrence Record ID:655372
Long-form Identifier:1:3:655372:2
GUID (UUID V4):0
References
Mumpton, F. A., Jaffe, H. W., Thompson, C. S. (1965) Coalingite, a new mineral from the New Idria serpentinite, Fresno and San Benito Counties, California. American Mineralogist, 50 (11-12) 1893-1913
Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc.
 
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