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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Plagioclase from
Mars stream alluvial deposits, Anglards-de-Salers, Salers, Mauriac, Cantal, Auvergne-Rhône-Alpes, France


Locality type:Alluvials
Classification
Species:'Plagioclase' (not an IMA approved species)
Formula:(Na,Ca)[(Si,Al)AlSi2]O8
Confirmation
Validity:Confirmed
Confirmation Methods:Visually Identified
Data
Mineral Data:Click here to view Plagioclase data
Locality Data:Click here to view Mars stream alluvial deposits, Anglards-de-Salers, Salers, Mauriac, Cantal, Auvergne-Rhône-Alpes, France
Data Identifiers
Mindat Occurrence Record ID:855477
Long-form Identifier:1:3:855477:2
GUID (UUID V4):0
Nearest other occurrences of Plagioclase
22.5km (14.0 miles) ⓘPuy de Bataillouse, Laveissière, Saint-Flour, Cantal, Auvergne-Rhône-Alpes, France
26.2km (16.3 miles) ⓘCantal Volcano, Thiézac, Aurillac, Cantal, Auvergne-Rhône-Alpes, France
27.2km (16.9 miles) ⓘSantoire stream alluvial deposits, Ségur-les-Villas, Saint-Flour, Cantal, Auvergne-Rhône-Alpes, France
43.7km (27.2 miles) ⓘMont-Dore Volcanic Field (Mont-Dore volcanic province), Puy-de-Dôme, Auvergne-Rhône-Alpes, France
47.6km (29.6 miles) ⓘAnder stream alluvial deposits, Roffiac, Saint-Flour, Cantal, Auvergne-Rhône-Alpes, France
65.9km (41.0 miles) ⓘChuquet Genestoux quarry, Nébouzat, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
73.0km (45.4 miles) ⓘAubrac Volcanic Field, Condom-d'Aubrac, Rodez, Aveyron, Occitanie, France
83.9km (52.1 miles) ⓘLimagne Basin, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
95.5km (59.4 miles) ⓘMenat-Malmouche Maars, Saint-Angel, Riom, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
References
Périnet, François (n.d.) Personal communication.
 
and/or  
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