Calcite
Curebourse quarry, Saint-Clément, Aurillac, Cantal, Auvergne-Rhône-Alpes, France
Spheroidal Calcite with concentric growths. The spheres have a yellow color and are on a basalt matrix. Very similar to those from Montalto di Castro, the classic Italian locality, but this one is from the Puy de Dôme area.
The sample is from the Francesco S. Stoppani collection (catalog number 0316). As is the case with so many specimens in ...
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