Properties of Gritstone lan Batubara
ukuran gandum
coarse grained
medium kanggo nggoleki coarse grained
rengat
conchoidal
conchoidal
porosity
Highly keropos
kurang keropos
luster
kurang
kurang kanggo vitreous kanggo submetallic
kekuatan compressive
ora Sumadhiya
cleavage
sampurna
non-ana
kateguhan
ora kasedhiya
ora kasedhiya
tartamtu gravitasi
2.250
1.1-1.4
Kapadhetan
2.2 g / cm 3
1100-1400 g / cm 3
resistance
tahan panas, impact tahan, meksa tahan
tahan panas