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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Petzite from
Helvetia Mine, Julian, Julian Mining District, San Diego County, California, USA


Locality type:Mine
Classification
Species:Petzite
Formula:Ag3AuTe2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Petzite data
Locality Data:Click here to view Helvetia Mine, Julian, Julian Mining District, San Diego County, California, USA
Data Identifiers
Mindat Occurrence Record ID:860352
Long-form Identifier:1:3:860352:4
GUID (UUID V4):0
References
Merriam, Richard (1958): Geology and Mineral Resources of Santa Ysabel Quadrangle, San Diego County. In: California Division of Mines and Geology Bulletin 177, 1958
 
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