Calcite with Dolomite

La Florida mining area, Herrería-Valdáliga-Rionansa, Comarca Costa Occidental/Saja-Nansa, Cantabria  Spain (±2000)

Specimen size: 11.4 × 8.6 × 4.2 cm = 4.49” × 3.39” × 1.65”
Main crystal size: 2.8 × 2.7 cm = 1.10” × 1.06”