Minerals identify

Know how to recognize them

Gregoryite

Carbonate mineral

Gregoryite is an anhydrous that is rich in potassium with the chemical formula (Na 2,K 2,Ca)CO 3. It is one of the two main ingredients of natrocarbonatite , found naturally in the lava of Ol Doinyo Lengai volcano, the other being nyerereite

Because of its anhydrous nature, gregoryite reacts quickly with the environment, causing the dark lava to be converted to white substance within hours.

Gregoryite was first described in 1980 and named after the British geologist and author John Walter Gregory (1864–1932), who studied the East African Rift Valley It occurs associated with nyerereite , halite and calcite

Identification

Color of mineral

Brown
White

Crystal ( diaphaneity )

Hexagonal