Vote for your favorite mineral in #MinCup26! - Hafnon vs. Putnisite
It's a pair of tiny minerals of unusual chemistry as orange Hafnon battles with purple Putnisite.
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Calcite from
A89 highway tunnel (La Verrière vein), Violay, Roanne, Loire, Auvergne-Rhône-Alpes, France


Locality type:Tunnel
Classification
Species:Calcite
Formula:CaCO3
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Calcite data
Locality Data:Click here to view A89 highway tunnel (La Verrière vein), Violay, Roanne, Loire, Auvergne-Rhône-Alpes, France
Data Identifiers
Mindat Occurrence Record ID:660560
Long-form Identifier:1:3:660560:5
GUID (UUID V4):0
Nearest other occurrences of Calcite
6.9km (4.3 miles) ⓘMontcellier Mine, Sainte-Colombe-sur-Gand, Roanne, Loire, Auvergne-Rhône-Alpes, France
16.1km (10.0 miles) ⓘLes Ponts-Tarrets, Le Breuil, Villefranche-sur-Saône, Rhône, Auvergne-Rhône-Alpes, France
18.5km (11.5 miles) ⓘNeaux quarry, Neaux, Roanne, Loire, Auvergne-Rhône-Alpes, France
18.6km (11.5 miles) ⓘChessy copper mines, Chessy, Villefranche-sur-Saône, Rhône, Auvergne-Rhône-Alpes, France
19.8km (12.3 miles) ⓘGueydon Mine, Montagny, Roanne, Loire, Auvergne-Rhône-Alpes, France
24.0km (14.9 miles) ⓘRuffy quarry, Bellegarde-en-Forez, Montbrison, Loire, Auvergne-Rhône-Alpes, France
32.1km (19.9 miles) ⓘChanrion mine, Poule-les-Écharmeaux, Villefranche-sur-Saône, Rhône, Auvergne-Rhône-Alpes, France
33.8km (21.0 miles) ⓘDuchère Tunnel, Lyon, Rhône, Auvergne-Rhône-Alpes, France
34.5km (21.4 miles) ⓘCreuzeval Quarry, Saint-Didier-sur-Beaujeu, Villefranche-sur-Saône, Rhône, Auvergne-Rhône-Alpes, France
35.0km (21.7 miles) ⓘLimestone quarry, Couzon-au-Mont-d'Or, Lyon, Rhône, Auvergne-Rhône-Alpes, France
References
BRGM (1981) - Fiche BSS 06971X4006/GT
 
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