Properties of Comendite lan Pantellerite
ukuran gandum
grained medium
grained nggoleki
rengat
mrembet
sub-conchoidal
tilas
bluish ireng
dingerteni
porosity
Highly keropos
kurang keropos
kekuatan compressive
ora Sumadhiya
cleavage
ora kasedhiya
conchoidal
tartamtu gravitasi
2.38
ora Sumadhiya
transparan
opaque
tembus kanggo opaque
Kapadhetan
ora Sumadhiya
ora Sumadhiya
resistance
tahan panas, impact tahan
tahan panas