Properties of Skarn lan Tephrite
ukuran gandum
grained nggoleki
medium kanggo nggoleki coarse grained
rengat
ora duwe aturan baku
ora rata
tilas
cahya kanggo coklat peteng
bluish ireng
porosity
kurang keropos
banget kurang keropos
luster
waxy lan kurang
subvitreous kanggo kurang
kekuatan compressive
ora Sumadhiya
cleavage
slaty
crenulation lan mrembet
tartamtu gravitasi
2.86
2.86
Kapadhetan
2.8-2.9 g / cm 3
2.8-2.9 g / cm 3
resistance
tahan panas
tahan panas, impact tahan