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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Cookeite from
Petrova Gora ore field, Petrova Gora Mountains, Sisak-Moslavina County, Croatia


Locality type:Ore Field
Classification
Species:Cookeite
Formula:(LiAl4◻)[AlSi3O10](OH)8
Confirmation
Validity:Unconfirmed/Questioned
Data
Mineral Data:Click here to view Cookeite data
Locality Data:Click here to view Petrova Gora ore field, Petrova Gora Mountains, Sisak-Moslavina County, Croatia
Data Identifiers
Mindat Occurrence Record ID:656256
Long-form Identifier:1:3:656256:4
GUID (UUID V4):0
References
Šoštarić, S. B. et al. (2009): Mineral. Petrol. 97, 111-128.
 
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