Properties of Felsite lan Obsidian
ukuran gandum
grained nggoleki
ora ditrapake
rengat
conchoidal
conchoidal
porosity
banget kurang keropos
banget kurang keropos
kateguhan
ora kasedhiya
ora kasedhiya
tartamtu gravitasi
2.6-2.7
2.6-2.7
Kapadhetan
2.6 g / cm 3
2.6 g / cm 3
resistance
tahan panas, impact tahan
tahan panas, impact tahan