Properties of Anthracite lan Felsite
ukuran gandum
medium kanggo nggoleki coarse grained
grained nggoleki
rengat
conchoidal
conchoidal
porosity
kurang keropos
banget kurang keropos
kekuatan compressive
ora Sumadhiya
kateguhan
ora kasedhiya
ora kasedhiya
tartamtu gravitasi
1.1-1.4
2.6-2.7
Kapadhetan
1.25-2.5 g / cm 3
2.6 g / cm 3
resistance
tahan panas, banyu tahan
tahan panas, impact tahan