Calcite

Bouismas Mine, Agdz, Bou Azzer mining district, Zagora Province, Drâa-Tafilalet Region  Morocco (2010)

Specimen size: 10.3 × 8.2 × 2.5 cm = 4.06” × 3.23” × 0.98”
Main crystal size: 3.2 × 2.2 cm = 1.26” × 0.87”