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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Ferro-actinolite from
San Gabriel Mountains, California, USA


Locality type:Mountain Range
Classification
Species:Ferro-actinolite
Formula:◻Ca2Fe52+(Si8O22)(OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Ferro-actinolite data
Locality Data:Click here to view San Gabriel Mountains, California, USA
Data Identifiers
Mindat Occurrence Record ID:243785
Long-form Identifier:1:3:243785:9
GUID (UUID V4):0
References
 
and/or  
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