Properties of Obsidian lan Mangerite
ukuran gandum
ora ditrapake
medium kanggo nggoleki coarse grained
rengat
conchoidal
ora kasedhiya
porosity
banget kurang keropos
kurang keropos
luster
vitreous
subvitreous kanggo kurang
cleavage
non-ana
ora kasedhiya
kateguhan
ora kasedhiya
ora kasedhiya
tartamtu gravitasi
2.6-2.7
2.8-3
Kapadhetan
2.6 g / cm 3
2.9-2.91 g / cm 3
resistance
tahan panas, impact tahan
tahan panas, impact tahan, meksa tahan