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
Serre-Bas, Besse-et-Saint-Anastaise, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France


Classification
Species:Cordierite
Formula:Mg2Al4Si5O18
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Cordierite data
Locality Data:Click here to view Serre-Bas, Besse-et-Saint-Anastaise, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
Data Identifiers
Mindat Occurrence Record ID:110408
Long-form Identifier:1:3:110408:0
GUID (UUID V4):0
Nearest other occurrences of Cordierite
32.0km (19.9 miles) ⓘLes Châtelaunoux quarry (Petit Chambois quarry), Mazaye, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
47.0km (29.2 miles) ⓘLa Gourcie, Ceilloux, Clermont-Ferrand, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
75.4km (46.8 miles) ⓘSte Barbe vein (Les Montmins), Montmins mining district, Échassières, Vichy, Allier, Auvergne-Rhône-Alpes, France
87.9km (54.6 miles) ⓘLa Chaumette, Rimeize, Mende, Lozère, Occitanie, France
88.3km (54.8 miles) ⓘMont Denise, Espaly-Saint-Marcel, Le Puy-en-Velay, Haute-Loire, Auvergne-Rhône-Alpes, France
89.8km (55.8 miles) ⓘMont Croustet, Ceyssac, Le Puy-en-Velay, Haute-Loire, Auvergne-Rhône-Alpes, France
95.1km (59.1 miles) ⓘSuc de la Violette quarries, Saint-Marcellin-en-Forez, Montbrison, Loire, Auvergne-Rhône-Alpes, France
References
J.J. Périchaud: "Les Minéraux d'Auvergne", Vol. 1, 1985
 
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