Calcite (variety cobaltoan) with Goethite and Quartz

Bou Azzer Mines, Bou Azzer mining district, Ouarzazate Province, Drâa-Tafilalet Region  Morocco (2021)

Specimen size: 7.5 × 4 × 2.4 cm = 2.95” × 1.57” × 0.94”
Main crystal size: 0.7 × 0.6 cm = 0.28” × 0.24”