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