Properties of Batubara lan Larvikite
ukuran gandum
medium kanggo nggoleki coarse grained
medium kanggo nggoleki coarse grained
porosity
kurang keropos
kurang keropos
luster
kurang kanggo vitreous kanggo submetallic
subvitreous kanggo kurang
tartamtu gravitasi
1.1-1.4
2.8-3
Kapadhetan
1100-1400 g / cm 3
2.9-2.91 g / cm 3
resistance
tahan panas
tahan panas, impact tahan, meksa tahan