Calcite with Dolomite

La Florida mining area, Herrería-Valdáliga-Rionansa, Comarca Costa Occidental/Saja-Nansa, Cantabria  Spain (±1980)

Specimen size: 7.2 × 4.9 × 3.1 cm = 2.83” × 1.93” × 1.22”
Main crystal size: 2.7 × 1.4 cm = 1.06” × 0.55”