Properties of Krikel Minyak lan Batubara
ukuran gandum
banget nggoleki-grained
medium kanggo nggoleki coarse grained
rengat
ora kasedhiya
conchoidal
porosity
Highly keropos
kurang keropos
luster
kurang
kurang kanggo vitreous kanggo submetallic
kateguhan
2.6
ora kasedhiya
tartamtu gravitasi
2.2-2.8
1.1-1.4
Kapadhetan
2.4-2.8 g / cm 3
1100-1400 g / cm 3
resistance
tahan panas, impact tahan
tahan panas