Marble Rock Composition

Marble is commonly used for sculpture and as a building material.

Marble rock composition. Typically marble is composed of the following major constituents. Marble is a metamorphic rock formed when limestone is subjected to high pressure or heat. Rocks with hardness 1 3 are soft rocks from 3 6 are medium hardness rocks and 6 10 are hard rocks. 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 under the conditions of metamorphism the calcite in the limestone recrystallizes to form a rock that is.

The variety of colours exhibited by marble are a consequence of minor amounts of impurities being incorporated with the. Marble is a granular metamorphic rock it is derived from limestone or dolomite and it consists of a mass of interlocking grains of calcite or the mineral dolomite. Marble forms under such conditions because the calcite forming the limestone recrystallises forming a denser rock consisting of roughly equigranular calcite crystals. The hardness of marble is 3 4 whereas its compressive strength is 115 00 n mm 2.

In its pure form marble is a white stone with a crystalline and sugary appearance consisting of calcium carbonate caco 3 usually marble contains other minerals including quartz graphite pyrite and iron oxides these minerals can give marble a pink brown gray green or variegated coloration. Marble marble is a metamorphic rock formed when limestone is exposed to high temperatures and pressures. Its essential mineral is recrystallized calcite caco 3. Marble is a metamorphic rock formed when limestone is exposed to high temperatures and pressures.

Marble is formed in nature from limestone through the process of metamorphism. 38 42 lime cao 20 25 silica sio2 2 4 alumina al2o3 1 5 2 5 various oxides nao and mgo and 30 32 various carbonates mgco3 and others. Of course the minerals found in the earth s rocks are produced by a variety of different arrangements of chemical elements. Streak is the color of rock when it is crushed or powdered.

Most rocks are composed of minerals. The variety of colours exhibited by marble are a consequence of minor amounts of impurities being incorporated with the calcite. Marble forms under such conditions because the calcite forming the limestone recrystallises forming a denser rock consisting of roughly equigranular calcite crystals. Marble is a metamorphic rock that forms when limestone is subjected to the heat and pressure of metamorphism.

Marble is a metamorphic rock of calcareous composition and often of a layered structure. Form of it when limestone buried deep in the older layers of earth s crust is subjected to heat and pressure from thick layers of overlying sediments. Rocks are rated on the on the moh s hardness scale which rates the rocks on the scale from 1 to 10.