Properties of Pantellerite lan Tephrite
ukuran gandum
grained nggoleki
medium kanggo nggoleki coarse grained
rengat
sub-conchoidal
ora rata
tilas
dingerteni
bluish ireng
porosity
kurang keropos
banget kurang keropos
luster
earthy
subvitreous kanggo kurang
kekuatan compressive
ora Sumadhiya
cleavage
conchoidal
crenulation lan mrembet
tartamtu gravitasi
ora Sumadhiya
2.86
transparan
tembus kanggo opaque
opaque
Kapadhetan
ora Sumadhiya
2.8-2.9 g / cm 3
kapasitas panas tartamtu
ora Sumadhiya
resistance
tahan panas
tahan panas, impact tahan