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
Mortagne stream alluvial deposits, La Guinguette, Singles, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France


Locality type:Alluvials
Classification
Species:'Fayalite-Forsterite Series' (not an IMA approved species)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Fayalite-Forsterite Series data
Locality Data:Click here to view Mortagne stream alluvial deposits, La Guinguette, Singles, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
Data Identifiers
Mindat Occurrence Record ID:439461
Long-form Identifier:1:3:439461:7
GUID (UUID V4):0
Nearest other occurrences of Fayalite-Forsterite Series
2.9km (1.8 miles) ⓘBurande stream alluvial deposits, Larodde, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
6.8km (4.2 miles) ⓘDordogne river alluvial deposits, Avèze, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
7.3km (4.5 miles) ⓘBurande stream alluvial deposits, Pontvieux, Tauves, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
8.2km (5.1 miles) ⓘLa Panouille stream alluvial deposits, La Vialolle, Labessette, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
11.5km (7.2 miles) ⓘThynières gully alluvial deposits, Beaulieu, Mauriac, Cantal, Auvergne-Rhône-Alpes, France
11.7km (7.2 miles) ⓘMortagne stream alluvial deposits, La Tour-d'Auvergne, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
11.8km (7.3 miles) ⓘLa Panouille stream alluvial deposits, Journiac, Sarlat-la-Canéda, Dordogne, Nouvelle-Aquitaine, France
12.5km (7.8 miles) ⓘAyssard stream alluvial deposits, La Tour-d'Auvergne, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
19.1km (11.9 miles) ⓘRicolas stream alluvial deposits, Laqueuille, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
20.0km (12.5 miles) ⓘFondain stream alluvial deposits, Laqueuille, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
References
Périnet, François (n.d.) Personal communication.
 
and/or  
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