Properties of Gritstone lan Pantellerite
ukuran gandum
coarse grained
grained nggoleki
rengat
conchoidal
sub-conchoidal
porosity
Highly keropos
kurang keropos
kekuatan compressive
ora Sumadhiya
cleavage
sampurna
conchoidal
kateguhan
ora kasedhiya
2
tartamtu gravitasi
2.250
ora Sumadhiya
transparan
opaque
tembus kanggo opaque
Kapadhetan
2.2 g / cm 3
ora Sumadhiya
kapasitas panas tartamtu
ora Sumadhiya
resistance
tahan panas, impact tahan, meksa tahan
tahan panas