Properties of Theralite lan Nephelinite
ukuran gandum
grained nggoleki
grained nggoleki
rengat
ora rata, splintery utawa conchoidal
flat
porosity
Highly keropos
kurang keropos
luster
waxy lan kurang
vitreous kanggo metallic
kekuatan compressive
ora Sumadhiya
tartamtu gravitasi
2.5-2.8
2.4-2.9
transparan
tembus kanggo opaque
opaque
Kapadhetan
2.7 g / cm 3
2.5-3 g / cm 3
resistance
impact tahan, meksa tahan, nyandhang tahan
tahan panas