Properties of Batubara lan Trachyte
ukuran gandum
medium kanggo nggoleki coarse grained
grained nggoleki
rengat
conchoidal
ora kasedhiya
porosity
kurang keropos
kurang keropos
luster
kurang kanggo vitreous kanggo submetallic
metallic
kekuatan compressive
ora Sumadhiya
cleavage
non-ana
ora kasedhiya
kateguhan
ora kasedhiya
ora kasedhiya
tartamtu gravitasi
1.1-1.4
2.7
Kapadhetan
1100-1400 g / cm 3
2.43-2.45 g / cm 3
kapasitas panas tartamtu
ora Sumadhiya
resistance
tahan panas
tahan panas, impact tahan, nyandhang tahan