Properties of Gneiss lan Gossan
ukuran gandum
medium kanggo coarse grained
nggoleki grained medium
rengat
ora duwe aturan baku
conchoidal
tilas
putih
putih kanggo werna abu-abu
porosity
banget kurang keropos
Highly keropos
kekuatan compressive
ora Sumadhiya
cleavage
miskin
ora kasedhiya
kateguhan
1.2
ora kasedhiya
tartamtu gravitasi
2.5-2.7
2.0
transparan
tembus kanggo opaque
opaque
Kapadhetan
2.6-2.9 g / cm 3
ora Sumadhiya
kapasitas panas tartamtu
ora Sumadhiya
resistance
tahan panas, meksa tahan, ngeruk tahan, nyandhang tahan
tahan panas, impact tahan, meksa tahan