Properties of Obsidian lan Lamprophyre
ukuran gandum
ora ditrapake
nggoleki kanggo coarse grained
rengat
conchoidal
conchoidal
porosity
banget kurang keropos
banget kurang keropos
luster
vitreous
subvitreous kanggo kurang
kekuatan compressive
ora Sumadhiya
cleavage
non-ana
conchoidal
kateguhan
ora kasedhiya
ora kasedhiya
tartamtu gravitasi
2.6-2.7
2.86-2.87
transparan
tembus
tembus kanggo opaque
Kapadhetan
2.6 g / cm 3
2.95-2.96 g / cm 3
kapasitas panas tartamtu
ora Sumadhiya
resistance
tahan panas, impact tahan
tahan panas, impact tahan