Properties of Krikel lan Gneiss
ukuran gandum
banget nggoleki-grained
medium kanggo coarse grained
rengat
ora kasedhiya
ora duwe aturan baku
porosity
Highly keropos
banget kurang keropos
tartamtu gravitasi
2.2-2.8
2.5-2.7
transparan
opaque
tembus kanggo opaque
Kapadhetan
2.4-2.8 g / cm 3
2.6-2.9 g / cm 3
kapasitas panas tartamtu
ora Sumadhiya
resistance
tahan panas, impact tahan
tahan panas, meksa tahan, ngeruk tahan, nyandhang tahan