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 Limestone Raw

Limestone Raw


Limestone raw is a sedimentary rock. It consists of Calcite and aragonite, raw of limestone consists of calcium oxide and carbon dioxide. These are form of calcium carbonate. Most of limestone form in shallow, calm, warm marine water.

Many limestones are composed from skeletal fragments of marine organisms. Foraminifera or coral are skeletal fragments. Limestone raw is raw material for the manufacture quicklime, cement, slaked lime and mortar. Quicklime is calcium oxide and slaked lime is calcium hydroxide.

It contains mineral impurities like magnesium, aluminum, silica acid or iron. It is also used as dimension stone, flux, roofs, granules, mines safety dust.

Limestone raw composed of Lime, Silica, Alumina, Na and Mg.

Lime(cao) : 38-42%
Silica (sio2) : 20-25%
Alumina (Al2O3) : 2-4%
Other oxides as Na, Mg : 1.5 to 2.5%
Often Marble also formed by limestone and dolomite. Raw of limestone is sedimentary rock. Heating sedimentary rock becomes metamorphic marble rock. Raw of limestone used as construction material from ancient time.

With the combination of calcium oxide, silica, alumina, limestone used for manufacture Portland cement.

Limestone metamorphoses into marble by under pressure

To identifying limestone, two major classification schemes used:

  • The Folk
  • The Dunham