Calcite

Bouismas Mine, Bouismas, Bou Azzer District, Tazenakht, Ouarzazate Province, Souss-Massa-Drâa Region  Morocco (2010)

Specimen size: 10.3 × 8.2 × 2.5 cm = 4.1” × 3.2” × 1.0”
Main crystal size: 3.2 × 2.2 cm = 1.3” × 0.9”