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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Fayalite-Forsterite Series from
Montboissier quarry, Brousse, Ambert, Puy-de-Dôme, Auvergne-Rhône-Alpes, France


Locality type:Quarry
Classification
Species:'Fayalite-Forsterite Series' (not an IMA approved species)
Confirmation
Validity:Confirmed
Confirmation Methods:Dealer/Collection Label
Data
Mineral Data:Click here to view Fayalite-Forsterite Series data
Locality Data:Click here to view Montboissier quarry, Brousse, Ambert, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
Data Identifiers
Mindat Occurrence Record ID:964451
Long-form Identifier:1:3:964451:9
GUID (UUID V4):0
Nearest other occurrences of Fayalite-Forsterite Series
19.2km (11.9 miles) ⓘBoulade stream alluvial deposits, Issoire, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
19.8km (12.3 miles) ⓘMarcillat stream alluvial deposits, Billom, Clermont-Ferrand, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
21.6km (13.4 miles) ⓘLimagne Basin, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
23.5km (14.6 miles) ⓘRoca-Neyra, Perrier, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
28.9km (17.9 miles) ⓘMadriat, Cistrières, Brioude, Haute-Loire, Auvergne-Rhône-Alpes, France
30.0km (18.6 miles) ⓘPuy de Saint-Sandoux (Puy de Barneire), Saint-Sandoux, Clermont-Ferrand, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
30.2km (18.8 miles) ⓘLa Barbate, Cistrières, Brioude, Haute-Loire, Auvergne-Rhône-Alpes, France
32.6km (20.3 miles) ⓘMonne stream alluvial deposits, Olloix, Clermont-Ferrand, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
34.0km (21.1 miles) ⓘTrinité stream alluvial deposits, Bousseyrolles, Vals-le-Chastel, Brioude, Haute-Loire, Auvergne-Rhône-Alpes, France
35.7km (22.2 miles) ⓘSénouire river alluvial deposits, Frugières-le-Pin, Brioude, Haute-Loire, Auvergne-Rhône-Alpes, France
References
Vanrusselt, Vik (2023) Personal Communication.
 
and/or  
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