Properties of Gneiss lan Trachyte
ukuran gandum
medium kanggo coarse grained
grained nggoleki
rengat
ora duwe aturan baku
ora kasedhiya
porosity
banget kurang keropos
kurang keropos
cleavage
miskin
ora kasedhiya
kateguhan
1.2
ora kasedhiya
tartamtu gravitasi
2.5-2.7
2.7
transparan
tembus kanggo opaque
opaque
Kapadhetan
2.6-2.9 g / cm 3
2.43-2.45 g / cm 3
resistance
tahan panas, meksa tahan, ngeruk tahan, nyandhang tahan
tahan panas, impact tahan, nyandhang tahan