Properties of Anthracite lan Flint
ukuran gandum
medium kanggo nggoleki coarse grained
banget nggoleki-grained
rengat
conchoidal
conchoidal
porosity
kurang keropos
Highly keropos
kekuatan compressive
ora Sumadhiya
kateguhan
ora kasedhiya
1.5
tartamtu gravitasi
1.1-1.4
2.5-2.8
transparan
opaque
tembus kanggo opaque
Kapadhetan
1.25-2.5 g / cm 3
2.7-2.71 g / cm 3
resistance
tahan panas, banyu tahan
tahan panas, impact tahan, meksa tahan, nyandhang tahan