Properties of Gritstone lan Phonolite
ukuran gandum
coarse grained
grained nggoleki
rengat
conchoidal
conchoidal kanggo ora rata
porosity
Highly keropos
kurang keropos
luster
kurang
greasy kanggo kurang
kateguhan
ora kasedhiya
ora kasedhiya
tartamtu gravitasi
2.250
2.6
transparan
opaque
tembus kanggo opaque
Kapadhetan
2.2 g / cm 3
2.6 g / cm 3
kapasitas panas tartamtu
ora Sumadhiya
resistance
tahan panas, impact tahan, meksa tahan
tahan panas, impact tahan, nyandhang tahan