1.1 This standard prescribes methods for chemical analysis of various grades of minerals like limestone, dolomite, calcite and magnesite, the average composition of which is given under 1.2. This standard also covers the methods for magnesite refractories. Separate methods for this purpose have been included wherever necessary.
1.2 * Composition
Percent
Loss on ignition 40 to 50
Silica (SiO2) 0.2 ? 4
Alumina ( Al2O3 ) 0.2 ? 2
Iron oxide ( Fe2O3 ) 0.2 ? 2
Calcium oxide ( CaO ) 0.5 ? 55
Magnesia ( MgO ) 0.5 ? 52
Carbon dioxide ( CO2 ) 42 ? 52
IS 1760-1962 history
1962IS 1760-1962 Methods for chemical analysis of limestone, dolomite and related materials