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