Siderite with Quartz and Baryte

La Mure coal mines, La Mure, Matheysine-Trièves, Grenoble, Isère, Auvergne-Rhône-Alpes  France

Specimen size: 12.7 × 12.5 × 4 cm = 5.00” × 4.92” × 1.57”
Main crystal size: 1.7 × 0.9 cm = 0.67” × 0.35”