Properties of Comendite lan Obsidian
ukuran gandum
grained medium
-
rengat
mrembet
conchoidal
porosity
Highly keropos
banget kurang keropos
tartamtu gravitasi
2.38
2.6-2.7
Kapadhetan
-9999 g / cm 3
2.6 g / cm 3
resistance
tahan panas, impact tahan
tahan panas, impact tahan