Properties of Greywacke lan Nephelinite
ukuran gandum
sudut lan nggoleki
grained nggoleki
porosity
Highly keropos
kurang keropos
luster
kurang
vitreous kanggo metallic
kekuatan compressive
ora Sumadhiya
tartamtu gravitasi
2.2-2.8
2.4-2.9
Kapadhetan
2.6-2.61 g / cm 3
2.5-3 g / cm 3
kapasitas panas tartamtu
ora Sumadhiya
resistance
tahan panas, impact tahan, meksa tahan
tahan panas