3.2" Cobaltoan Calcite Crystal Cluster - Bou Azzer, Morocco
This is a cluster of vibrant pink, Cobaltoan Calcite crystals from the Agoudal Mine in Morocco. There is a dark mineral associated with the calcite crystals, likely tenorite. When looking closely, a small cluster of malachite crystals can be seen jammed between calcite crystals.
Cobaltoan calcite, also known as cobaltocalcite, is one of many different varieties of calcite, forming with a chemical composition of (Ca,Co)CO3. It crystallizes in a trigonal crystal system and forms rhombohedral or scalenohedral crystals. These crystals tend to display a pink color of which intensity can range anywhere from a pinkish-salmon to a hot pink.