Dolomite Grains, Purity : 90

Dolomite Grains is an anhydrous carbonate mineral composed of calcium magnesium carbonate, ideally CaMg(CO3)2.Dolomite crystals range from transparent to translucent, but dolomite grains in rocks are typically translucent or nearly opaque. The luster ranges from sub vitreous to dull. Dolomite, like calcite, cleaves into six-sided polyhedrons with diamond-shaped faces.Over time, layers of the calcium carbonate form, and with sufficient time and pressure from overlying materials, are transformed to solid rock. The chemical composition of seawater and its minerals contaminants will be recorded in the limestone impurities. Limestone frequently also contains the minerals dolomite or calcium magnesium carbonate (CaMg(CO3)2, and a second crystalline form of calcium carbonate, aragonite.