Properties of Anthracite lan Rhomb Porphyry
ukuran gandum
medium kanggo nggoleki coarse grained
grained nggoleki
rengat
conchoidal
conchoidal
porosity
kurang keropos
banget kurang keropos
luster
mengilap
subvitreous kanggo kurang
kekuatan compressive
ora Sumadhiya
cleavage
non-ana
sampurna
kateguhan
ora kasedhiya
2.7
tartamtu gravitasi
1.1-1.4
2.86
Kapadhetan
1.25-2.5 g / cm 3
2.8-2.9 g / cm 3
resistance
tahan panas, banyu tahan
tahan panas, meksa tahan