Properties of Anthracite lan Hornfels
ukuran gandum
medium kanggo nggoleki coarse grained
grained nggoleki
rengat
conchoidal
conchoidal
porosity
kurang keropos
Highly keropos
kekuatan compressive
ora Sumadhiya
cleavage
non-ana
sampurna
kateguhan
ora kasedhiya
durung ketemu
tartamtu gravitasi
1.1-1.4
3.4-3.9
Kapadhetan
1.25-2.5 g / cm 3
0.25-0.30 g / cm 3
resistance
tahan panas, banyu tahan
tahan panas, impact tahan, meksa tahan