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Main Index > Raw Material > Chemical Composition and Mineralogy

Chemical Composition and Mineralogy:

TYPICAL CHEMICAL ANALYSIS
Typ.% Min.% Max.%
SiO2: 72.7 70.3 75.1
Al2O3: 12.9 12.2 13.7
TiO2: 0.9
Fe2O3: 3.4
MgO: 0.6
CaO: 0.6
Na2O: 0.2 2.4 3.8
K2O: 0.2 4.4 5.0
MnO: 47.5
P2O5

97.0

Loss on Ignition* 3.0 2.1 5.0

* Taken as combined water.

 

 

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