Properties of Icelandite lan Tephrite
ukuran gandum
banget nggoleki-grained
medium kanggo nggoleki coarse grained
porosity
kurang keropos
banget kurang keropos
luster
vitreous
subvitreous kanggo kurang
kekuatan compressive
ora Sumadhiya
cleavage
ora kasedhiya
crenulation lan mrembet
tartamtu gravitasi
2.5-2.8
2.86
Kapadhetan
2.11-2.36 g / cm 3
2.8-2.9 g / cm 3
resistance
tahan panas, meksa tahan, ngeruk tahan, nyandhang tahan
tahan panas, impact tahan