Properties of Obsidian lan Anorthosite
ukuran gandum
ora ditrapake
coarse grained
rengat
conchoidal
ora duwe aturan baku
porosity
banget kurang keropos
kurang keropos
luster
vitreous
mutiyara kanggo subvitreous
kekuatan compressive
ora Sumadhiya
cleavage
non-ana
ora duwe aturan baku
kateguhan
ora kasedhiya
ora kasedhiya
tartamtu gravitasi
2.6-2.7
2.62-2.82
Kapadhetan
2.6 g / cm 3
2.7-4 g / cm 3
resistance
tahan panas, impact tahan
tahan panas, impact tahan, meksa tahan, ngeruk tahan, nyandhang tahan