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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Hexahydrite from
Julia coal mine, Baukau, Herne, Arnsberg, North Rhine-Westphalia, Germany


Locality type:Colliery
Classification
Species:Hexahydrite
Formula:Mg(H2O)6(SO4)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Hexahydrite data
Locality Data:Click here to view Julia coal mine, Baukau, Herne, Arnsberg, North Rhine-Westphalia, Germany
Data Identifiers
Mindat Occurrence Record ID:47370
Long-form Identifier:1:3:47370:1
GUID (UUID V4):0
References
 
and/or  
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