Properties of Anthracite lan Ignimbrite
ukuran gandum
medium kanggo nggoleki coarse grained
grained nggoleki
rengat
conchoidal
ora rata
porosity
kurang keropos
Highly keropos
luster
mengilap
vitreous kanggo kurang
kekuatan compressive
ora Sumadhiya
cleavage
non-ana
ora kasedhiya
kateguhan
ora kasedhiya
ora kasedhiya
tartamtu gravitasi
1.1-1.4
2.73
Kapadhetan
1.25-2.5 g / cm 3
1-1.8 g / cm 3
resistance
tahan panas, banyu tahan
tahan panas, impact tahan, meksa tahan, nyandhang tahan