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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Cryolite from
Nellusivik, Kangerlussuaq Fjord (Søndre Strømfjord), Qeqqata, Greenland


Classification
Species:Cryolite
Formula:Na2NaAlF6
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Cryolite data
Locality Data:Click here to view Nellusivik, Kangerlussuaq Fjord (Søndre Strømfjord), Qeqqata, Greenland
Data Identifiers
Mindat Occurrence Record ID:698406
Long-form Identifier:1:3:698406:9
GUID (UUID V4):0
References
Pauly, H. (1946): Medd. fra Dansk Geol. Forening. 11, 30-46
 
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