Barytocalcite

This is a short overview. For the background — history, value over time and notable mines — see Barytocalcite →

A barium-calcium carbonate mineral, chemically BaCa(CO3)2, of little independent commercial use itself but historically worked as a barium ore; Blagill Mine, Cumbria, was the only place in the world where it was mined commercially, until cheaper witherite from a neighbouring mine ended demand for it after 1895.