Properties of Websterite lan Slate
ukuran gandum
coarse grained
banget nggoleki-grained
rengat
ora rata
splintery
tilas
putih, greenish putih utawa abu-abu
cahya kanggo coklat peteng
porosity
kurang keropos
kurang keropos
luster
kurang kanggo vitreous kanggo submetallic
kurang
tartamtu gravitasi
3.2-3.5
2.65-2.8
Kapadhetan
3.1-3.6 g / cm 3
2.6-2.8 g / cm 3
resistance
impact tahan, meksa tahan, nyandhang tahan
tahan panas, impact tahan, meksa tahan, nyandhang tahan