Calcitite

Calcite is a mineral made primarily of calcium carbonate, commonly found in sedimentary rocks like limestone. It forms from the accumulation of tiny shells and skeletons of marine organisms, as well as through geological processes. Calcite is known for its variety of crystal shapes and colors, and it is an important component in the production of cement and lime. It also has various uses in agriculture, industry, and even in the production of glass and ceramics. Calcite is recognized for its ability to react with acids, producing carbon dioxide gas, which is a key characteristic in identifying the mineral.