Properties of Breccia lan Obsidian
ukuran gandum
medium kanggo coarse grained
ora ditrapake
rengat
ora rata
conchoidal
porosity
kurang keropos
banget kurang keropos
luster
kurang kanggo pearly
vitreous
kekuatan compressive
ora Sumadhiya
kateguhan
ora kasedhiya
ora kasedhiya
tartamtu gravitasi
2.86-2.87
2.6-2.7
Kapadhetan
0 g / cm 3
2.6 g / cm 3
kapasitas panas tartamtu
ora Sumadhiya
resistance
tahan panas, impact tahan, meksa tahan, nyandhang tahan
tahan panas, impact tahan