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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Grunerite from
Kolársky vrch deposit, Pezinok, Pezinok District, Bratislava Region, Slovakia


Locality type:Deposit
Classification
Species:Grunerite
Formula:◻Fe22+Fe52+(Si8O22)(OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Grunerite data
Locality Data:Click here to view Kolársky vrch deposit, Pezinok, Pezinok District, Bratislava Region, Slovakia
Data Identifiers
Mindat Occurrence Record ID:412259
Long-form Identifier:1:3:412259:3
GUID (UUID V4):0
References
Koděra, Miroslav; Kolektív, A. (1986) Topografická mineralógia Slovenska. Veda Vydavatel'stvo.
 
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