Dolomite powder, Purity/Concentration : 99%

We are offering dolomite powder. Dolomite is a common rock-forming mineral. It is a calcium magnesium carbonate with a chemical composition of camg(co3)2. It is the primary component of the sedimentary rock known as dolostone and the metamorphic rock known as dolomitic marble. Limestone that contains some dolomite is known as dolomitic limestone.

Dolomite is rarely found in modern sedimentary environments but dolostones are very common in the rock record. They can be geographically extensive and hundreds to thousands of feet thick. Most rocks that are rich in dolomite were originally deposited as calcium carbonate muds that were post-depositionally altered by magnesium-rich pore water to form dolomite.

Dolomite has a mohs hardness of 3 12 to 4 and is sometimes found in rhombohedral crystals with curved faces. Dolomite produces a very weak reaction to cold, dilute hydrochloric acid; however, if the acid is warm or if the dolomite is powdered a much stronger acid reaction will be observed. (powdered dolomite can easily be produced by scratching it on a streak plate.).
Dolomite is very similar to the mineral calcite. Calcite is composed of calcium carbonate (caco3) while dolomite is a calcium magnesium carbonate (camg(co3)2). These two minerals are one of the most common pairs to present a mineral identification challenge in the field or classroom. The best way to tell these minerals apart is to consider their hardness and acid reaction. Calcite has a hardness of 3 while dolomite is slightly harder at 3 12 to 4. Calcite is also strongly reactive with cold hydrochloric acid, while dolomite will effervesce weakly with cold hydrochloric acid.