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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Diadochite from
Isom Avants pits, Shady, Polk County, Arkansas, USA


Locality type:Pit
Classification
Species:Diadochite
Formula:Fe23+(PO4)(SO4)(OH) · 6H2O
Confirmation
Validity:Unconfirmed/Questioned
Data
Mineral Data:Click here to view Diadochite data
Locality Data:Click here to view Isom Avants pits, Shady, Polk County, Arkansas, USA
Data Identifiers
Mindat Occurrence Record ID:509676
Long-form Identifier:1:3:509676:3
GUID (UUID V4):0
References
Am Min 51:1811-1814
 
and/or  
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