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