JFD14AN5: Vizille is a classic French mineral locality where many alpine quartzes and very good (and very large) siderites have been found. I kept this piece because I really liked that Quartz, alone and tall in the middle of the piece, and because the specimen was a floater, with a single large Siderite crystal in which are the Quartz and a second generation of siderites, with smaller and lighter colored crystals.
Mésage Mine, Saint-Pierre-de-Mésage, Vizille, Grenoble, Isère, Auvergne-Rhône-Alpes  France (2010)

Specimen size: 7.2 × 5.6 × 6.1  cm = 2.83” × 2.20” × 2.40”

Main crystal size: 3.7 × 0.7 cm = 1.46” × 0.28”