Properties of Pumice lan Gritstone
ukuran gandum
grained nggoleki
coarse grained
tilas
putih, greenish putih utawa abu-abu
putih
porosity
Highly keropos
Highly keropos
cleavage
sampurna
sampurna
kateguhan
3
ora kasedhiya
tartamtu gravitasi
2.86
2.250
Kapadhetan
0.25-0.3 g / cm 3
2.2 g / cm 3
resistance
impact tahan, meksa tahan
tahan panas, impact tahan, meksa tahan