Calcite Marble Metamorphic Rock

Marble is a metamorphic stone formed by subjecting limestone to heat or pressure.

Calcite marble metamorphic rock.

These rocks are extremely common and make up a significant portion of earth s crust. Calcite is a rock forming mineral with a chemical formula of caco 3. Calcite is the principal constituent of limestone and marble. In geology the term marble refers to metamorphosed limestone but its use in stonemasonry more broadly encompasses unmetamorphosed limestone.

It is composed primarily of the mineral calcite caco 3 and usually contains other minerals such as clay minerals micas quartz pyrite iron oxides and graphite. Granoblastic rocks have uniformly sized equidimensional anhedral grains produced by recrystallization in a solid state metamorphism. It is extremely common and found throughout the world in sedimentary metamorphic and igneous rocks. It is a metamorphosed carbonate rock limestone or dolomite rock.

Under the conditions of metamorphism the calcite in the limestone recrystallizes to form a rock that is a mass of interlocking calcite crystals. Impurities produce pale gray brown or variegated colored rock. Some geologists consider it to be a ubiquitous mineral one that is found everywhere. Calcite specimens can occur in metamorphic deposits igneous rocks and hydrothermal veins.

Marble is a sparkling and typically granoblastic rock. Black marble also occurs. Some geologists consider it to be a ubiquitous mineral one that is found everywhere. These rocks are extremely common and make up a significant portion of earth s crust.

Marble is a metamorphic rock that forms when limestone is subjected to the heat and pressure of metamorphism. In pure form marble consists of calcium carbonate calcite and is sparkling white. Marble takes a high polish. Marble is typically not foliated although there are exceptions.