Properties of Siltstone lan Porphyry
ukuran gandum
grained nggoleki
grained nggoleki
rengat
conchoidal
ora duwe aturan baku
porosity
Highly keropos
kurang keropos
cleavage
ora kasedhiya
cacat
tartamtu gravitasi
2.54-2.73
2.5-4
transparan
opaque
tembus kanggo opaque
Kapadhetan
2.6-2.7 g / cm 3
2.5-2.52 g / cm 3
resistance
tahan panas, impact tahan, meksa tahan, banyu tahan
tahan panas, impact tahan