Properties of Obsidian lan Marble
ukuran gandum
ora ditrapake
grained medium
rengat
conchoidal
ora kasedhiya
porosity
banget kurang keropos
kurang keropos
luster
vitreous
kurang kanggo mutiyara kanggo subvitreous
cleavage
non-ana
sampurna
kateguhan
ora kasedhiya
ora kasedhiya
tartamtu gravitasi
2.6-2.7
2.86-2.87
Kapadhetan
2.6 g / cm 3
2.4-2.7 g / cm 3
resistance
tahan panas, impact tahan
tahan panas