MBR87CD3: Druse formed by Quartz crystals, on matrix, very elongated and aerial, water-clear and perfectly sharp, with endings that show the Dauphine habit, interpenetrated by ocher-brown rhombohedral Siderite crystals forming a classic alpine association for these two species and with the Quartz clearer than is usually the case for this locality.
Le Trou des Chasseurs, Vizille, Grenoble, Isère, Auvergne-Rhône-Alpes  France (12/2011)

Specimen size: 8.8 × 6.2 × 5.3 cm = 3.46” × 2.44” × 2.09”

Main crystal size: 1.4 × 1.3 cm = 0.55” × 0.51”