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