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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Irarsite from
West Nottingham Township, Chester County, Pennsylvania, USA


Locality type:Township
Classification
Species:Irarsite
Formula:(Ir,Ru,Rh,Pt)AsS
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Irarsite data
Locality Data:Click here to view West Nottingham Township, Chester County, Pennsylvania, USA
Data Identifiers
Mindat Occurrence Record ID:770429
Long-form Identifier:1:3:770429:1
GUID (UUID V4):0
References
Smith and Barnes (2011) Pennsylvania Geology v. 41, no. 3/4.
 
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