Properties of Borolanite lan Pantellerite
ukuran gandum
grained nggoleki
grained nggoleki
rengat
conchoidal kanggo ora rata
sub-conchoidal
porosity
kurang keropos
kurang keropos
luster
greasy kanggo kurang
earthy
kekuatan compressive
ora Sumadhiya
cleavage
miskin
conchoidal
kateguhan
ora kasedhiya
2
tartamtu gravitasi
2.6
ora Sumadhiya
transparan
tembus kanggo opaque
tembus kanggo opaque
Kapadhetan
2.6 g / cm 3
ora Sumadhiya
resistance
tahan panas, impact tahan, nyandhang tahan
tahan panas