Properties of Obsidian lan Pseudotachylite
ukuran gandum
ora ditrapake
banget nggoleki-grained
rengat
conchoidal
ora rata
tilas
putih
cahya kanggo coklat peteng
porosity
banget kurang keropos
kurang keropos
cleavage
non-ana
ora duwe aturan baku
kateguhan
ora kasedhiya
ora kasedhiya
tartamtu gravitasi
2.6-2.7
2.46-2.86
transparan
tembus
transparent kanggo Translucent
Kapadhetan
2.6 g / cm 3
2.7-2.9 g / cm 3
resistance
tahan panas, impact tahan
tahan panas