Properties of Anthracite lan Andesit
ukuran gandum
medium kanggo nggoleki coarse grained
banget nggoleki-grained
rengat
conchoidal
ora rata
porosity
kurang keropos
kurang keropos
kekuatan compressive
ora Sumadhiya
cleavage
non-ana
ora kasedhiya
kateguhan
ora kasedhiya
1.1
tartamtu gravitasi
1.1-1.4
2.5-2.8
Kapadhetan
1.25-2.5 g / cm 3
2.11-2.36 g / cm 3
resistance
tahan panas, banyu tahan
tahan panas, meksa tahan, nyandhang tahan