Properties of Granit lan Obsidian
ukuran gandum
gedhe lan coarse grained
ora ditrapake
rengat
ora kasedhiya
conchoidal
porosity
kurang keropos
banget kurang keropos
luster
kurang kanggo grainy karo bagean kala-kala pearly lan vitreous
vitreous
cleavage
ora kasedhiya
non-ana
kateguhan
ora kasedhiya
ora kasedhiya
tartamtu gravitasi
2.6-2.7
2.6-2.7
Kapadhetan
2.65-2.75 g / cm 3
2.6 g / cm 3
resistance
tahan panas, nyandhang tahan
tahan panas, impact tahan