Properties of Pumice lan Pseudotachylite
ukuran gandum
grained nggoleki
banget nggoleki-grained
tilas
putih, greenish putih utawa abu-abu
cahya kanggo coklat peteng
porosity
Highly keropos
kurang keropos
cleavage
sampurna
ora duwe aturan baku
kateguhan
3
ora kasedhiya
tartamtu gravitasi
2.86
2.46-2.86
transparan
opaque
transparent kanggo Translucent
Kapadhetan
0.25-0.3 g / cm 3
2.7-2.9 g / cm 3
resistance
impact tahan, meksa tahan
tahan panas