Properties of Pumice lan Coquina
ukuran gandum
grained nggoleki
coarse grained
rengat
planar
ora duwe aturan baku
tilas
putih, greenish putih utawa abu-abu
putih
porosity
Highly keropos
Highly keropos
luster
earthy
kurang kanggo vitreous kanggo submetallic
kekuatan compressive
ora Sumadhiya
cleavage
sampurna
ora kasedhiya
kateguhan
3
ora kasedhiya
tartamtu gravitasi
2.86
1.10-2.24
Kapadhetan
0.25-0.3 g / cm 3
2.8-2.9 g / cm 3
kapasitas panas tartamtu
ora Sumadhiya
resistance
impact tahan, meksa tahan
tahan panas, impact tahan, meksa tahan, nyandhang tahan