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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Arrhenite from
Ytterby, Resarö, Vaxholm, Stockholm County, Sweden


Locality type:Quarry
Classification
Species:'Arrhenite' (not an IMA approved species)
Formula:(Y, Er, Ca, Zr, Ta, Si, O)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Arrhenite data
Locality Data:Click here to view Ytterby, Resarö, Vaxholm, Stockholm County, Sweden
Data Identifiers
Mindat Occurrence Record ID:1160
Long-form Identifier:1:3:1160:0
GUID (UUID V4):0
References
 
and/or  
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