Properties of Argillite lan Trondhjemite
ukuran gandum
grained nggoleki
medium kanggo nggoleki coarse grained
rengat
conchoidal kanggo ora rata
conchoidal
tilas
putih kanggo werna abu-abu
bluish ireng
porosity
Highly keropos
banget kurang keropos
luster
waxy lan kurang
subvitreous kanggo kurang
cleavage
slaty
ora kasedhiya
tartamtu gravitasi
2.56-2.68
2.86-3
Kapadhetan
2.54-2.66 g / cm 3
2.73 g / cm 3
resistance
tahan panas, impact tahan
tahan panas, meksa tahan, nyandhang tahan