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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Ignimbritic tuff from
Payún Matrú Volcano, Altiplano de Payún Matrú, Agua Escondida District, Malargüe Department, Mendoza Province, Argentina


Locality type:Shield Volcano
Classification
Type:Ignimbritic tuff
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Ignimbritic tuff data
Locality Data:Click here to view Payún Matrú Volcano, Altiplano de Payún Matrú, Agua Escondida District, Malargüe Department, Mendoza Province, Argentina
Data Identifiers
Mindat Occurrence Record ID:1713773
Long-form Identifier:1:3:1713773:7
GUID (UUID V4):0
References
Hernando, Irene R., Llambias, Eduardo J., Gonzalez, Pablo D., Sato, Kei (2012) Volcanic stratigraphy and evidence of magma mixing in the Quaternary Payun Matru volcano, andean backarc in western Argentina. Andean Geology, 39 (1). 158-179 doi:10.5027/andgeov39n1-a08
 
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