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 Tour-d'Auvergne, 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 Tour-d'Auvergne, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
Data Identifiers
Mindat Occurrence Record ID:439474
Long-form Identifier:1:3:439474:7
GUID (UUID V4):0
Nearest other occurrences of Fayalite-Forsterite Series
1.3km (0.8 miles) ⓘAyssard stream alluvial deposits, La Tour-d'Auvergne, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
5.1km (3.1 miles) ⓘBurande stream alluvial deposits, Pontvieux, Tauves, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
9.2km (5.7 miles) ⓘDordogne river alluvial deposits, Avèze, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
10.2km (6.3 miles) ⓘBurande stream alluvial deposits, Larodde, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
11.0km (6.8 miles) ⓘRabouty Quarry, Mont-Dore, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
11.0km (6.9 miles) ⓘLa Panouille stream alluvial deposits, La Vialolle, Labessette, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
11.2km (7.0 miles) ⓘRicolas stream alluvial deposits, Laqueuille, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
11.2km (7.0 miles) ⓘMont-Dore Volcanic Field (Mont-Dore volcanic province), Puy-de-Dôme, Auvergne-Rhône-Alpes, France
11.7km (7.2 miles) ⓘMortagne stream alluvial deposits, La Guinguette, Singles, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
12.9km (8.0 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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