Properties of Pumice lan Tachylite
ukuran gandum
grained nggoleki
medium kanggo nggoleki coarse grained
tilas
putih, greenish putih utawa abu-abu
.Bangunan
porosity
Highly keropos
kurang keropos
cleavage
sampurna
ora kasedhiya
kateguhan
3
ora kasedhiya
tartamtu gravitasi
2.86
2.4
Kapadhetan
0.25-0.3 g / cm 3
3.058 g / cm 3
resistance
impact tahan, meksa tahan
tahan panas, impact tahan, nyandhang tahan