Properties of Anthracite lan Skarn
ukuran gandum
medium kanggo nggoleki coarse grained
grained nggoleki
rengat
conchoidal
ora duwe aturan baku
tilas
ireng
cahya kanggo coklat peteng
porosity
kurang keropos
kurang keropos
luster
mengilap
waxy lan kurang
kateguhan
ora kasedhiya
2.4
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