Properties of Slate lan Theralite
ukuran gandum
banget nggoleki-grained
grained nggoleki
rengat
splintery
ora rata, splintery utawa conchoidal
tilas
cahya kanggo coklat peteng
putih
porosity
kurang keropos
Highly keropos
luster
kurang
waxy lan kurang
kekuatan compressive
ora Sumadhiya
tartamtu gravitasi
2.65-2.8
2.5-2.8
transparan
opaque
tembus kanggo opaque
Kapadhetan
2.6-2.8 g / cm 3
2.7 g / cm 3
resistance
tahan panas, impact tahan, meksa tahan, nyandhang tahan
impact tahan, meksa tahan, nyandhang tahan