Properties of Itacolumite lan Tephrite
ukuran gandum
coarse utawa nggoleki
medium kanggo nggoleki coarse grained
rengat
conchoidal
ora rata
porosity
Highly keropos
banget kurang keropos
luster
kurang
subvitreous kanggo kurang
cleavage
sampurna
crenulation lan mrembet
tartamtu gravitasi
2.2-2.8
2.86
Kapadhetan
2.2-2.8 g / cm 3
2.8-2.9 g / cm 3
resistance
tahan panas, impact tahan, meksa tahan
tahan panas, impact tahan