Properties of Obsidian lan Adakite
ukuran gandum
ora ditrapake
nggoleki grained medium
rengat
conchoidal
conchoidal
porosity
banget kurang keropos
kurang keropos
luster
vitreous
grainy, mutiyara lan vitreous
kekuatan compressive
ora Sumadhiya
cleavage
non-ana
ora kasedhiya
kateguhan
ora kasedhiya
ora kasedhiya
tartamtu gravitasi
2.6-2.7
ora Sumadhiya
Kapadhetan
2.6 g / cm 3
ora Sumadhiya
kapasitas panas tartamtu
ora Sumadhiya
resistance
tahan panas, impact tahan
tahan panas, meksa tahan, nyandhang tahan