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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Chalcedony from
Basalt quarry, Chastreix, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France


02528950017362096257906.jpg
Chalcedony

Basalt quarry, Chastreix, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
02521630017272053726040.jpg
Chalcedony

Basalt quarry, Chastreix, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
00481660017272027171829.jpg
Chalcedony

Basalt quarry, Chastreix, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
02521630017272053726040.jpg
Chalcedony

Basalt quarry, Chastreix, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
00481660017272027171829.jpg
Chalcedony

Basalt quarry, Chastreix, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
02521630017272053726040.jpg
Chalcedony

Basalt quarry, Chastreix, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
Locality type:Quarry
Classification
Species:Quartz var: Chalcedony
Formula:SiO2
Confirmation
Validity:Confirmed
Confirmation Methods:Visually Identified
Data
Mineral Data:Click here to view Chalcedony data
Locality Data:Click here to view Basalt quarry, Chastreix, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
Photo GalleryView Gallery (2 photos)
Data Identifiers
Mindat Occurrence Record ID:768341
Long-form Identifier:1:3:768341:1
GUID (UUID V4):0
Nearest other occurrences of Chalcedony
33.5km (20.8 miles) ⓘVarennes, Chanonat, Clermont-Ferrand, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
33.9km (21.1 miles) ⓘCôte des Pompes, Saulzet-le-Chaud, Romagnat, Clermont-Ferrand, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
42.3km (26.3 miles) ⓘLa Barre Mine (La Martinèche Mine), Saint-Jacques-d'Ambur, Riom, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
42.3km (26.3 miles) ⓘLa Grange Mine, Meymac, Ussel, Corrèze, Nouvelle-Aquitaine, France
44.5km (27.6 miles) ⓘPuy de la Poix, Clermont-Ferrand, Clermont-Ferrand, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
45.7km (28.4 miles) ⓘN122 road cut, La Grange de Ganilh, Laveissière, Saint-Flour, Cantal, Auvergne-Rhône-Alpes, France
49.0km (30.4 miles) ⓘPont des Bouyges quarry, Moustier-Ventadour, Ussel, Corrèze, Nouvelle-Aquitaine, France
50.4km (31.3 miles) ⓘLa Violette farm, Saint-Beauzire, Brioude, Haute-Loire, Auvergne-Rhône-Alpes, France
57.1km (35.5 miles) ⓘChavarot quarry, Saint-Jean-des-Ollières, Clermont-Ferrand, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
60.9km (37.9 miles) ⓘLa Bessière Quarry, Saint-Genès-la-Tourette, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
References
TREILLARD Michel collection
 
and/or  
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