Properties of Tephrite lan Gossan
ukuran gandum
medium kanggo nggoleki coarse grained
nggoleki grained medium
rengat
ora rata
conchoidal
tilas
bluish ireng
putih kanggo werna abu-abu
porosity
banget kurang keropos
Highly keropos
luster
subvitreous kanggo kurang
metallic
kekuatan compressive
ora Sumadhiya
cleavage
crenulation lan mrembet
ora kasedhiya
kateguhan
2.4
ora kasedhiya
tartamtu gravitasi
2.86
2.0
Kapadhetan
2.8-2.9 g / cm 3
ora Sumadhiya
resistance
tahan panas, impact tahan
tahan panas, impact tahan, meksa tahan