Mineral: Siderite with Quartz
Locality: Mésage Mine, Saint-Pierre-de-Mésage, Vizille, Grenoble, Isère, Auvergne-Rhône-Alpes, France
Dimensions: 13 x 13 x 24.5 cm / main crystal: 9.8 cm

Description: Mass: 3850 g MIM number:1932 Cluster of well-formed, lustrous, olive-green, intertwined translucent rhombohedra, which are dotted on some faces with small crystals of quartz. The samples from this pocket are, contrary to what has generally been found in this mine, shiny, greener, and without any trace of oxides. Photographer: AINU / Augustin de Valence

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