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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Illite from
Joux, Bellevue-la-Montagne, Le Puy-en-Velay, Haute-Loire, Auvergne-Rhône-Alpes, France


Classification
Species:Muscovite var: Illite
Formula:K0.65Al2.0[Al0.65Si3.35O10](OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Illite data
Locality Data:Click here to view Joux, Bellevue-la-Montagne, Le Puy-en-Velay, Haute-Loire, Auvergne-Rhône-Alpes, France
Data Identifiers
Mindat Occurrence Record ID:224775
Long-form Identifier:1:3:224775:5
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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