Properties of Anthracite lan Rhyodacite
ukuran gandum
medium kanggo nggoleki coarse grained
grained nggoleki
rengat
conchoidal
conchoidal
porosity
kurang keropos
kurang keropos
luster
mengilap
greasy kanggo kurang
kekuatan compressive
ora Sumadhiya
cleavage
non-ana
ora kasedhiya
kateguhan
ora kasedhiya
2.1
tartamtu gravitasi
1.1-1.4
2.34-2.40
Kapadhetan
1.25-2.5 g / cm 3
ora Sumadhiya
resistance
tahan panas, banyu tahan
tahan panas