Properties of Lignite lan Porphyry
ukuran gandum
medium kanggo nggoleki coarse grained
grained nggoleki
rengat
conchoidal
ora duwe aturan baku
porosity
Highly keropos
kurang keropos
luster
kurang kanggo vitreous kanggo submetallic
kurang
kateguhan
ora kasedhiya
1.7
tartamtu gravitasi
1.1-1.4
2.5-4
transparan
opaque
tembus kanggo opaque
Kapadhetan
800-801 g / cm 3
2.5-2.52 g / cm 3
kapasitas panas tartamtu
ora Sumadhiya
resistance
tahan panas
tahan panas, impact tahan