Properties of Siltstone lan Foidolite
ukuran gandum
grained nggoleki
medium kanggo nggoleki coarse grained
rengat
conchoidal
conchoidal
porosity
Highly keropos
banget kurang keropos
luster
kurang
subvitreous kanggo kurang
cleavage
ora kasedhiya
sampurna
kateguhan
2.6
ora kasedhiya
tartamtu gravitasi
2.54-2.73
2.86
Kapadhetan
2.6-2.7 g / cm 3
ora Sumadhiya
resistance
tahan panas, impact tahan, meksa tahan, banyu tahan
tahan panas, nyandhang tahan