Calcite with Dolomite

La Florida mining area, Herrería-Valdáliga-Rionansa, Cantabria  Spain (±2000)

Specimen size: 5.6 × 5.9 × 2.1 cm = 2.2” × 2.3” × 0.8”
Main crystal size: 3.7 × 2.1 cm = 1.5” × 0.8”