Properties of Anthracite lan Anorthosite
ukuran gandum
medium kanggo nggoleki coarse grained
coarse grained
rengat
conchoidal
ora duwe aturan baku
porosity
kurang keropos
kurang keropos
luster
mengilap
mutiyara kanggo subvitreous
cleavage
non-ana
ora duwe aturan baku
kateguhan
ora kasedhiya
ora kasedhiya
tartamtu gravitasi
1.1-1.4
2.62-2.82
Kapadhetan
1.25-2.5 g / cm 3
2.7-4 g / cm 3
resistance
tahan panas, banyu tahan
tahan panas, impact tahan, meksa tahan, ngeruk tahan, nyandhang tahan