Properties of Gabbro lan Obsidian
ukuran gandum
coarse grained
ora ditrapake
rengat
conchoidal
conchoidal
porosity
Highly keropos
banget kurang keropos
luster
ora kasedhiya
vitreous
cleavage
ora kasedhiya
non-ana
kateguhan
1.6
ora kasedhiya
tartamtu gravitasi
2.86-2.87
2.6-2.7
Kapadhetan
2.7-3.3 g / cm 3
2.6 g / cm 3
kapasitas panas tartamtu
ora Sumadhiya
resistance
impact tahan, meksa tahan, nyandhang tahan
tahan panas, impact tahan