Properties of Anthracite lan Slate
ukuran gandum
medium kanggo nggoleki coarse grained
banget nggoleki-grained
rengat
conchoidal
splintery
tilas
ireng
cahya kanggo coklat peteng
porosity
kurang keropos
kurang keropos
kekuatan compressive
ora Sumadhiya
kateguhan
ora kasedhiya
1.2
tartamtu gravitasi
1.1-1.4
2.65-2.8
Kapadhetan
1.25-2.5 g / cm 3
2.6-2.8 g / cm 3
resistance
tahan panas, banyu tahan
tahan panas, impact tahan, meksa tahan, nyandhang tahan