Properties of Batubara lan Rhyolite
ukuran gandum
medium kanggo nggoleki coarse grained
gedhe lan coarse grained
rengat
conchoidal
sub-conchoidal
porosity
kurang keropos
Highly keropos
luster
kurang kanggo vitreous kanggo submetallic
earthy
kekuatan compressive
ora Sumadhiya
cleavage
non-ana
ora kasedhiya
kateguhan
ora kasedhiya
2
tartamtu gravitasi
1.1-1.4
2.65-2.67
Kapadhetan
1100-1400 g / cm 3
2.4-2.6 g / cm 3
kapasitas panas tartamtu
ora Sumadhiya
resistance
tahan panas
tahan panas, nyandhang tahan