Calcite Marble Metamorphic Rock

Impurities produce pale gray brown or variegated colored rock.

Calcite marble metamorphic rock.

It is extremely common and found throughout the world in sedimentary metamorphic and igneous rocks. In geology the term marble refers to metamorphosed limestone but its use in stonemasonry more broadly encompasses unmetamorphosed limestone. Marble is a sparkling and typically granoblastic 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. 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. Some geologists consider it to be a ubiquitous mineral one that is found everywhere. Calcite is the principal constituent of limestone and marble.

It is a metamorphosed carbonate rock limestone or dolomite rock. Marble is typically not foliated although there are exceptions. Marble is a metamorphic rock consisting predominantly of calcite or dolomite. Under the conditions of metamorphism the calcite in the limestone recrystallizes to form a rock that is a mass of interlocking calcite crystals.

Calcite specimens can occur in metamorphic deposits igneous rocks and hydrothermal veins. Marble takes a high polish. Some geologists consider it to be a ubiquitous mineral one that is found everywhere. Marble is a metamorphic stone formed by subjecting limestone to heat or pressure.

Granoblastic rocks have uniformly sized equidimensional anhedral grains produced by recrystallization in a solid state metamorphism. These rocks are extremely common and make up a significant portion of earth s crust. Black marble also occurs. Calcite is the principal constituent of limestone and marble.