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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Montmorillonite from
Yangshan Au deposit, Wen County, Longnan, Gansu, China


Locality type:Deposit
Classification
Species:Montmorillonite
Formula:(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Montmorillonite data
Locality Data:Click here to view Yangshan Au deposit, Wen County, Longnan, Gansu, China
Data Identifiers
Mindat Occurrence Record ID:875374
Long-form Identifier:1:3:875374:8
GUID (UUID V4):0
References
Jinzhong Qi, Li Li, and Guicai Yang (2008): Mineral Deposits 27(1), 81-87
 
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