Properties of Theralite lan Tephrite
ukuran gandum
grained nggoleki
medium kanggo nggoleki coarse grained
rengat
ora rata, splintery utawa conchoidal
ora rata
porosity
Highly keropos
banget kurang keropos
luster
waxy lan kurang
subvitreous kanggo kurang
kekuatan compressive
ora Sumadhiya
cleavage
non-ana
crenulation lan mrembet
tartamtu gravitasi
2.5-2.8
2.86
transparan
tembus kanggo opaque
opaque
Kapadhetan
2.7 g / cm 3
2.8-2.9 g / cm 3
resistance
impact tahan, meksa tahan, nyandhang tahan
tahan panas, impact tahan