Properties of Anthracite lan Trondhjemite
ukuran gandum
medium kanggo nggoleki coarse grained
medium kanggo nggoleki coarse grained
rengat
conchoidal
conchoidal
porosity
kurang keropos
banget kurang keropos
luster
mengilap
subvitreous kanggo kurang
cleavage
non-ana
ora kasedhiya
kateguhan
ora kasedhiya
2.1
tartamtu gravitasi
1.1-1.4
2.86-3
Kapadhetan
1.25-2.5 g / cm 3
2.73 g / cm 3
resistance
tahan panas, banyu tahan
tahan panas, meksa tahan, nyandhang tahan