Siderite with Quartz

Tincroft Mine, Carn Brea and Tincroft United Mines, Carn Brea, Camborne - Redruth - Saint Day District, Cornwall  United Kingdom

Specimen size: 7 × 4.8 × 5 cm = 2.76” × 1.89” × 1.97”
Main crystal size: 0.7 × 0.6 cm = 0.28” × 0.24”