Calcite with Siderite and Pyrite

Peyrebrune Mine, Peyrebrune area, Montredon-Labessonnié, Le Haut Dadou, Castres, Tarn, Occitanie  France

Specimen size: 9.2 × 6.6 × 3.1 cm = 3.62” × 2.60” × 1.22”