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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Danaite from
Unspecified locality, Tempe area, Maricopa County, Arizona, USA


Classification
Species:Arsenopyrite var: Danaite
Formula:(Fe0.90Co0.10)AsS - (Fe0.65Co0.35)AsS
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Danaite data
Locality Data:Click here to view Unspecified locality, Tempe area, Maricopa County, Arizona, USA
Data Identifiers
Mindat Occurrence Record ID:256602
Long-form Identifier:1:3:256602:3
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.120
 
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