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Gergovie, La-Roche-Blanche, Veyre-Monton, Puy-de-Dôme, Auvergne-Rhône-Alpes, France

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Detailed Mineral List:


Aragonite
Formula: CaCO3
Habit: Sprays of thin crystals.
Colour: White
Description: Nice crystalline sprays on a gossanny matrix, purchased from Isis Minerals, July 10th 2005. The aragonites are on puzzolana.
Reference: J.Ralph Collection S.Berger Collection
Calcite
Formula: CaCO3
Habit: Balls of calcite.
Colour: White
Reference: Arliguie M collection S. Berger Collection
Opal
Formula: SiO2 · nH2O
Reference: J.-J. Périchaud: "Les Minéraux d'Auvergne", Vol. 1, 1985
Staurolite
Formula: Fe2+2Al9Si4O23(OH)
Mineral and/or Locality  
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