Barytocalcite
![](/Images/godic/202412/23/Barytocalcite_w_-_rock_Calcium_barium_carbonate_Blaygill_Alston_Cumberland_England_23025608.jpg")
Barytocalcite is an anhydrous barium calcium carbonate mineral with the chemical formula BaCa(CO3)2. It is trimorphous with alstonite and paralstonite, that is to say the three minerals have the same formula but different structures. Baryte and quartz pseudomorphs after barytocalcite have been observed.