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