Properties of Anthracite lan Itacolumite
ukuran gandum
medium kanggo nggoleki coarse grained
coarse utawa nggoleki
rengat
conchoidal
conchoidal
porosity
kurang keropos
Highly keropos
kekuatan compressive
ora Sumadhiya
cleavage
non-ana
sampurna
kateguhan
ora kasedhiya
2.6
tartamtu gravitasi
1.1-1.4
2.2-2.8
Kapadhetan
1.25-2.5 g / cm 3
2.2-2.8 g / cm 3
resistance
tahan panas, banyu tahan
tahan panas, impact tahan, meksa tahan