Calcite with Dolomite

La Florida mining area, Herrería-Valdáliga-Rionansa, Comarca Costa Occidental/Saja-Nansa, Cantabria  Spain (±2006)

Specimen size: 11.8 × 10.7 × 4.4 cm = 4.65” × 4.21” × 1.73”
Main crystal size: 5.8 × 2.3 cm = 2.28” × 0.91”