Properties of Pegmatite lan Batubara
ukuran gandum
medium kanggo coarse grained
medium kanggo nggoleki coarse grained
rengat
conchoidal
conchoidal
porosity
kurang keropos
kurang keropos
luster
grainy, mutiyara lan vitreous
kurang kanggo vitreous kanggo submetallic
kekuatan compressive
ora Sumadhiya
cleavage
sampurna
non-ana
kateguhan
2.1
ora kasedhiya
tartamtu gravitasi
2.6-2.63
1.1-1.4
transparan
tembus kanggo opaque
opaque
Kapadhetan
2.6-2.65 g / cm 3
1100-1400 g / cm 3
kapasitas panas tartamtu
ora Sumadhiya
resistance
tahan panas, impact tahan, meksa tahan
tahan panas