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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Tridymite from
Roc de Courlande, Chastreix, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France


Locality type:Outcrop
Classification
Species:Tridymite
Formula:SiO2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Tridymite data
Locality Data:Click here to view Roc de Courlande, Chastreix, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
Data Identifiers
Mindat Occurrence Record ID:248407
Long-form Identifier:1:3:248407:5
GUID (UUID V4):0
Nearest other occurrences of Tridymite
3.2km (2.0 miles) ⓘPuy de Sancy, Chastreix, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
3.6km (2.3 miles) ⓘRavin des Chèvres (Rivaux Grands), Mont-Dore, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
4.4km (2.8 miles) ⓘLe Capucin, Mont-Dore, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
5.9km (3.7 miles) ⓘBois du Loup, Chastreix, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
6.1km (3.8 miles) ⓘSuper-Besse ski resort, Besse-et-Saint-Anastaise, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
7.3km (4.6 miles) ⓘLes Planches quarry, Murat-le-Quaire, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
12.8km (8.0 miles) ⓘPuy de Vivanson Quarry, Perpezat, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
29.1km (18.1 miles) ⓘLiocamp Quarry, Puy de Menoyre, Menet, Mauriac, Cantal, Auvergne-Rhône-Alpes, France
29.2km (18.1 miles) ⓘPuy de Menoyre, Menet, Mauriac, Cantal, Auvergne-Rhône-Alpes, France
39.3km (24.4 miles) ⓘPuy de Ténuzet quarry, Saint-Ours-les-Roches, Riom, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
References
Designolle, J.L. (1996). Massif du Sancy (Puy de Dôme). Le Cahier des Micromonteurs, (4), 8-9.
 
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