Properties of Obsidian lan Shoshonite
ukuran gandum
ora ditrapake
medium kanggo nggoleki coarse grained
rengat
conchoidal
ora rata
tilas
putih
putih kanggo werna abu-abu
porosity
banget kurang keropos
kurang keropos
kekuatan compressive
ora Sumadhiya
kateguhan
ora kasedhiya
1.6
tartamtu gravitasi
2.6-2.7
2.98
Kapadhetan
2.6 g / cm 3
2.9-3 g / cm 3
kapasitas panas tartamtu
ora Sumadhiya
resistance
tahan panas, impact tahan
tahan panas, meksa tahan