Properties of Anthracite lan Websterite
ukuran gandum
medium kanggo nggoleki coarse grained
coarse grained
rengat
conchoidal
ora rata
tilas
ireng
putih, greenish putih utawa abu-abu
porosity
kurang keropos
kurang keropos
luster
mengilap
kurang kanggo vitreous kanggo submetallic
cleavage
non-ana
ora duwe aturan baku
kateguhan
ora kasedhiya
ora kasedhiya
tartamtu gravitasi
1.1-1.4
3.2-3.5
Kapadhetan
1.25-2.5 g / cm 3
3.1-3.6 g / cm 3
kapasitas panas tartamtu
ora Sumadhiya
resistance
tahan panas, banyu tahan
impact tahan, meksa tahan, nyandhang tahan