Properties of Gneiss lan Tuff
ukuran gandum
medium kanggo coarse grained
grained nggoleki
rengat
ora duwe aturan baku
ora rata
porosity
banget kurang keropos
Highly keropos
luster
kurang
vitreous kanggo kurang
cleavage
miskin
ora kasedhiya
kateguhan
1.2
ora kasedhiya
tartamtu gravitasi
2.5-2.7
2.73
transparan
tembus kanggo opaque
opaque
Kapadhetan
2.6-2.9 g / cm 3
1-1.8 g / cm 3
kapasitas panas tartamtu
ora Sumadhiya
resistance
tahan panas, meksa tahan, ngeruk tahan, nyandhang tahan
tahan panas, impact tahan, meksa tahan, nyandhang tahan