Germany is the world's principal producer of barite and has large reserves of high grade.
Thus calc spar is a common name for calcite, heavy spar for barite, needle spar for aragonite, and so on.
Witherite, the barium carbonate, is a much rarer mineral but is found with barite in some veins.
The gangue is mainly fine-grained quartz or jasperoid, and barite.
The principal deposits of barite are found in sedimentary rocks, and especially in limestones and dolomites.
A usually white, clear, or yellow orthorhombic mineral. Barite occurs as flattened blades or in a circular pattern of crystals that looks like a flower and, when colored red by iron stains, is called a desert rose. It is found in limestone, in clay-rich rocks, and in sandstones. Barite is used as a source of barium. Chemical formula: BaSO4.