Properties of Greywacke lan Phonolite
ukuran gandum
sudut lan nggoleki
grained nggoleki
rengat
conchoidal
conchoidal kanggo ora rata
porosity
Highly keropos
kurang keropos
luster
kurang
greasy kanggo kurang
kekuatan compressive
ora Sumadhiya
kateguhan
2.6
ora kasedhiya
tartamtu gravitasi
2.2-2.8
2.6
transparan
opaque
tembus kanggo opaque
Kapadhetan
2.6-2.61 g / cm 3
2.6 g / cm 3
resistance
tahan panas, impact tahan, meksa tahan
tahan panas, impact tahan, nyandhang tahan