Properties of Phonolite lan Anthracite
ukuran gandum
grained nggoleki
medium kanggo nggoleki coarse grained
rengat
conchoidal kanggo ora rata
conchoidal
porosity
kurang keropos
kurang keropos
luster
greasy kanggo kurang
mengilap
kekuatan compressive
ora Sumadhiya
kateguhan
ora kasedhiya
ora kasedhiya
tartamtu gravitasi
2.6
1.1-1.4
transparan
tembus kanggo opaque
opaque
Kapadhetan
2.6 g / cm 3
1.25-2.5 g / cm 3
kapasitas panas tartamtu
ora Sumadhiya
resistance
tahan panas, impact tahan, nyandhang tahan
tahan panas, banyu tahan