MgFe(CO3)2, known as dolomite, is a mineral composed of magnesium, iron, and carbonate. It typically forms in sedimentary environments and is often found in limestone deposits. Dolomite is used in various applications, including construction, agriculture, and as a source of magnesium. This mineral has a unique crystal structure and can appear in various colors, including white, gray, and pink. Dolomite is also significant in geology, as it can indicate past environmental conditions. Its chemical formula reflects its composition, with magnesium (Mg), iron (Fe), and carbonate (CO3) ions playing essential roles in its properties.