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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Monazite Group from
Mount Somma, Metropolitan City of Naples, Campania, Italy


Locality type:Mountain
Classification
Species:'Monazite Group' (not an IMA approved species)
Formula:REE(PO4)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Monazite Group data
Locality Data:Click here to view Mount Somma, Metropolitan City of Naples, Campania, Italy
Data Identifiers
Mindat Occurrence Record ID:137302
Long-form Identifier:1:3:137302:8
GUID (UUID V4):0
References
www.dinet.it/Mineral-GMC/AMI/vesuvio.html
 
and/or  
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