Properties of Pumice lan Borolanite
ukuran gandum
grained nggoleki
grained nggoleki
rengat
planar
conchoidal kanggo ora rata
tilas
putih, greenish putih utawa abu-abu
putih
porosity
Highly keropos
kurang keropos
luster
earthy
greasy kanggo kurang
kateguhan
3
ora kasedhiya
tartamtu gravitasi
2.86
2.6
transparan
opaque
tembus kanggo opaque
Kapadhetan
0.25-0.3 g / cm 3
2.6 g / cm 3
kapasitas panas tartamtu
ora Sumadhiya
resistance
impact tahan, meksa tahan
tahan panas, impact tahan, nyandhang tahan