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