Properties of Krikel lan Anthracite
ukuran gandum
banget nggoleki-grained
medium kanggo nggoleki coarse grained
rengat
ora kasedhiya
conchoidal
porosity
Highly keropos
kurang keropos
kekuatan compressive
ora Sumadhiya
kateguhan
2.6
ora kasedhiya
tartamtu gravitasi
2.2-2.8
1.1-1.4
Kapadhetan
2.4-2.8 g / cm 3
1.25-2.5 g / cm 3
resistance
tahan panas, impact tahan
tahan panas, banyu tahan