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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Amphibolite from
Stjernøya Island, Alta, Troms og Finnmark, Norway


Locality type:Island
Classification
Type:Amphibolite
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Amphibolite data
Locality Data:Click here to view Stjernøya Island, Alta, Troms og Finnmark, Norway
Data Identifiers
Mindat Occurrence Record ID:1388928
Long-form Identifier:1:3:1388928:5
GUID (UUID V4):0
References
 
and/or  
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