Celestine, Dolomite
Champa quarry, Le Gua, Grenoble, Isère, Auvergne-Rhône-Alpes, France
On a substratum of pearly white, saddle habit, dolomite crystallizations, celestine crystals had grown with a tabular habit, gemmy blue color and rare ending.
I have found that piece in an old argillaceous limestone mine open in 1848. The story of the mine and all its minerals had been described in a article in the "Règne Minéral" number ...