Properties of Obsidian lan Pantellerite
ukuran gandum
ora ditrapake
grained nggoleki
rengat
conchoidal
sub-conchoidal
porosity
banget kurang keropos
kurang keropos
kekuatan compressive
ora Sumadhiya
cleavage
non-ana
conchoidal
kateguhan
ora kasedhiya
2
tartamtu gravitasi
2.6-2.7
ora Sumadhiya
transparan
tembus
tembus kanggo opaque
Kapadhetan
2.6 g / cm 3
ora Sumadhiya
kapasitas panas tartamtu
ora Sumadhiya
resistance
tahan panas, impact tahan
tahan panas