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