% 0,16- 0,38
MnO
% 2.23- 3,6
Fe 2 O 3
% 0,15-2,51
K 2 O
% 0,28-2,63
Na 2 O
% 4,7 -19,3
SiO 2
% 5,3 -9,5
MgCO 3
% 68 81
CaCO 3
CHEMICAL ANALYSIS
0,364
(cm/50 cm 2 )
Average abrasion strenght
141200
(Kgf/cm 2 )
Modules of elasticity
164
(Kgf/cm 2 )
Sternght to bending
16
(Kgf/cm 2 )
Strenght to blow
754
(Kgf/cm 2 )
Compressive strenght
1.41
(%)
Porosity
1.32
By volume (%)
0.49
By weight(%)
Water absorption at atmospheric pressure
2.70
(gr / cm 3 )
Density
2.66
(gr / cm 3 )
Unt Volume Weght
3 5
Mohs
Hardnesss
PHYSICAL, MECHANICAL and TECHOLOGICAL PROPERTIES