Properties of Picrite lan Obsidian
ukuran gandum
grained nggoleki
ora ditrapake
rengat
ora rata
conchoidal
tilas
putih, greenish putih utawa abu-abu
putih
porosity
kurang keropos
banget kurang keropos
luster
subvitreous kanggo kurang
vitreous
kateguhan
2.1
ora kasedhiya
tartamtu gravitasi
2.75-2.92
2.6-2.7
Kapadhetan
1.5-2.5 g / cm 3
2.6 g / cm 3
resistance
tahan panas
tahan panas, impact tahan