Properties of Gneiss lan Rhyodacite
ukuran gandum
medium kanggo coarse grained
grained nggoleki
rengat
ora duwe aturan baku
conchoidal
porosity
banget kurang keropos
kurang keropos
luster
kurang
greasy kanggo kurang
cleavage
miskin
ora kasedhiya
tartamtu gravitasi
2.5-2.7
2.34-2.40
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