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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Calc-schist from
Fréjus railway tunnel (north section), Modane, Saint-Jean-de-Maurienne, Savoie, Auvergne-Rhône-Alpes, France


Locality type:Tunnel
Classification
Type:Calc-schist
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Calc-schist data
Locality Data:Click here to view Fréjus railway tunnel (north section), Modane, Saint-Jean-de-Maurienne, Savoie, Auvergne-Rhône-Alpes, France
Data Identifiers
Mindat Occurrence Record ID:1489045
Long-form Identifier:1:3:1489045:5
GUID (UUID V4):0
References
Sacco, F. (1910) ll gruppo del Cenisio-Ambin-Frejus: studio geologico applicato al progetto di una nuova galleria ferroviaria tra la valle della Dora Riparia e la valle dell'Arc. Tipografia Baravalle e Falconieri, Torino, 56 pp.
 
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