Properties of Pumice lan Rhyodacite
ukuran gandum
grained nggoleki
grained nggoleki
tilas
putih, greenish putih utawa abu-abu
ireng
porosity
Highly keropos
kurang keropos
luster
earthy
greasy kanggo kurang
cleavage
sampurna
ora kasedhiya
tartamtu gravitasi
2.86
2.34-2.40
Kapadhetan
0.25-0.3 g / cm 3
ora Sumadhiya
resistance
impact tahan, meksa tahan
tahan panas