Properties of Pumice lan Argillite
ukuran gandum
grained nggoleki
grained nggoleki
rengat
planar
conchoidal kanggo ora rata
tilas
putih, greenish putih utawa abu-abu
putih kanggo werna abu-abu
porosity
Highly keropos
Highly keropos
luster
earthy
waxy lan kurang
kekuatan compressive
ora Sumadhiya
tartamtu gravitasi
2.86
2.56-2.68
Kapadhetan
0.25-0.3 g / cm 3
2.54-2.66 g / cm 3
resistance
impact tahan, meksa tahan
tahan panas, impact tahan