Properties of Pumice lan Tonalite
ukuran gandum
grained nggoleki
medium kanggo nggoleki coarse grained
tilas
putih, greenish putih utawa abu-abu
bluish ireng
porosity
Highly keropos
banget kurang keropos
luster
earthy
subvitreous kanggo kurang
kekuatan compressive
ora Sumadhiya
cleavage
sampurna
ora kasedhiya
tartamtu gravitasi
2.86
2.86-3
Kapadhetan
0.25-0.3 g / cm 3
2.73 g / cm 3
resistance
impact tahan, meksa tahan
tahan panas, meksa tahan, banyu tahan