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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Bieberite from
Heidberg Mine, Eckenhagen, Reichshof, Oberbergischer Kreis, Cologne, North Rhine-Westphalia, Germany


Locality type:Mine
Classification
Species:Bieberite
Formula:Co2+(H2O)6(SO4) · H2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Bieberite data
Locality Data:Click here to view Heidberg Mine, Eckenhagen, Reichshof, Oberbergischer Kreis, Cologne, North Rhine-Westphalia, Germany
Data Identifiers
Mindat Occurrence Record ID:119182
Long-form Identifier:1:3:119182:0
GUID (UUID V4):0
References
Weiß, Stefan (1990) Mineralfundstellen Atlas Deutschland West. Christian Weise Verlag, Munich, Germany. 320pp.
 
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