Calcite with Dolomite

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

Specimen size: 9.8 × 7.7 × 4.9 cm = 3.86” × 3.03” × 1.93”
Main crystal size: 2.5 × 2.1 cm = 0.98” × 0.83”