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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Polybasite from
King of Arizona Mine, Kofa Mining District, Yuma County, Arizona, USA


Locality type:Mine
Classification
Species:Polybasite
Formula:[Ag6Sb2S7][Ag9CuS4]
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Polybasite data
Locality Data:Click here to view King of Arizona Mine, Kofa Mining District, Yuma County, Arizona, USA
Data Identifiers
Mindat Occurrence Record ID:239487
Long-form Identifier:1:3:239487:9
GUID (UUID V4):0
References
Anthony, John W.; Williams, Sidney A.; Bideaux, Richard A.; Grant, Raymond W. (1995) Mineralogy of Arizona (3rd ed.). University of Arizona Press.p.333
 
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