Properties of Tephrite lan Anthracite
ukuran gandum
medium kanggo nggoleki coarse grained
medium kanggo nggoleki coarse grained
rengat
ora rata
conchoidal
porosity
banget kurang keropos
kurang keropos
luster
subvitreous kanggo kurang
mengilap
kekuatan compressive
ora Sumadhiya
cleavage
crenulation lan mrembet
non-ana
kateguhan
2.4
ora kasedhiya
tartamtu gravitasi
2.86
1.1-1.4
Kapadhetan
2.8-2.9 g / cm 3
1.25-2.5 g / cm 3
resistance
tahan panas, impact tahan
tahan panas, banyu tahan