Examples from the Web for barite
Germany is the world's principal producer of barite and has large reserves of high grade.
Witherite, the barium carbonate, is a much rarer mineral but is found with barite in some veins.
Thus calc spar is a common name for calcite, heavy spar for barite, needle spar for aragonite, and so on.
The principal deposits of barite are found in sedimentary rocks, and especially in limestones and dolomites.
The gangue is mainly fine-grained quartz or jasperoid, and barite.