Properties of Batubara lan Adamellite
ukuran gandum
medium kanggo nggoleki coarse grained
coarse grained
rengat
conchoidal
ora kasedhiya
porosity
kurang keropos
kurang keropos
luster
kurang kanggo vitreous kanggo submetallic
kurang kanggo grainy karo bagean kala-kala pearly lan vitreous
kekuatan compressive
ora Sumadhiya
cleavage
non-ana
ora kasedhiya
kateguhan
ora kasedhiya
ora kasedhiya
tartamtu gravitasi
1.1-1.4
2.6-2.7
Kapadhetan
1100-1400 g / cm 3
2.6-2.8 g / cm 3
resistance
tahan panas
tahan panas, nyandhang tahan