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