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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Cordierite from
Granite quarry, Vieille-Brioude, Brioude, Haute-Loire, Auvergne-Rhône-Alpes, France


Locality type:Quarry
Classification
Species:Cordierite
Formula:Mg2Al4Si5O18
Comments:In anatexites
Habit:crystals up to 1 cm
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Cordierite data
Locality Data:Click here to view Granite quarry, Vieille-Brioude, Brioude, Haute-Loire, Auvergne-Rhône-Alpes, France
Data Identifiers
Mindat Occurrence Record ID:219166
Long-form Identifier:1:3:219166:9
GUID (UUID V4):0
References
Pélisson, P.G. (1989) Etude Minéralogique et Métallogénique du District Filonien Polytype de Paulhaguet (Haute-Loire, Massif Central Français). Orléans.
 
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