dolomite

Chhattisgarh, for instance, is India's sole producer of tin concentrates and moulding sand, and a leading source of coal, dolomite, bauxite and high-grade iron ore, according to the ministry of mines.

But in Last Chance Lake, calcium combines with plentiful carbonate as well as magnesium to form dolomite, the same mineral that forms picturesque mountain ranges.

The secret to finally growing dolomite in the lab was removing defects in the mineral structure as it grows.

Their formation is most common in easily erodible karst terrains with carbonate rocks, like limestone or dolomite, or minerals known as evaporites, like salt and gypsum.

The markings were deeply incised into dolomite rock in locations close to the burials in the Dinaledi and Hill chambers.