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  Sampling point K53
CHEMICAL ANALYSIS MASS % SiO2 % 75±5
Al2O3 % 15±2
Fe2O3 % 0.8±0.1
TiO2 % 0.52
CaO % 0.22
MgO % 0.04
K2O % 1.5±0.2
Na2O % 0.13
SO3 % 0.04
LOI % 3_5
MINERALOGICAL COMPOSITION % Kaolinit -
Feldspar -
Quartz -
Mica(white) -
Pyrophilit -
M.O.R kgf/cm2 green(dried at 110) 7±1
at -
Contraction green(dreid at 110) 1
at 1200 4±0.5
WATER ABSORBTION% at 1200 18±1
PLASTICITY Pfefercorn 22±1
Plastic water % 20±1
COLOR TEST FIRED AT 1200 Iso brightness 66±2
Yellowness 16±2