Properties of Slate lan Comendite
ukuran gandum
banget nggoleki-grained
grained medium
tilas
cahya kanggo coklat peteng
bluish ireng
porosity
kurang keropos
Highly keropos
tartamtu gravitasi
2.65-2.8
2.38
Kapadhetan
2.6-2.8 g / cm 3
-9999 g / cm 3
resistance
tahan panas, impact tahan, meksa tahan, nyandhang tahan
tahan panas, impact tahan