what two rocks/crystals make up marble, what is it‘s mineral composition, and where is it most commonly found, how was it formed, and what rock did it originate from.
It is a metamorphic rock resulting from the metamorphism of limestone, composed mostly of calcite (a crystalline form of calcium carbonate, CaCO3
Marble is formed by the metamorphism of the original rocks limestone (CaCO3) or dolomite (CaMg(CO3)2. The minerals in marble include calcite and aragonite, both with the formula CaCO3 but with different crystal structure. Marble is usually thought of as being composed of pure calcium carbonate, although some rocks still containing dolomite are called marble or dolomitic marble. This is a third possible mineral in marble. It is most commonly found in areas that have been subjected to regional metamorphism - formed by the recrystallization of the original rocks under temperature and pressure.
