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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Dufrénite from
Tsumeb Mine (Ongopolo Mine), Tsumeb, Oshikoto Region, Namibia


Locality type:Mine
Classification
Species:Dufrénite
Formula:Ca0.5Fe2+Fe53+(PO4)4(OH)6 · 2H2O
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Azurite1
Data
Mineral Data:Click here to view Dufrénite data
Locality Data:Click here to view Tsumeb Mine (Ongopolo Mine), Tsumeb, Oshikoto Region, Namibia
Data Identifiers
Mindat Occurrence Record ID:100304
Long-form Identifier:1:3:100304:8
GUID (UUID V4):0
References
 
and/or  
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