Monazite-Ce
Chemical Formula	Ce，La，Nd，ThPO4
Species	Phosphates
Crystal System	Monoclinic
Mohs Scale	5
Specific Gravity	5.4
Color	Yellowish, reddish brown to brown; shades of greenish, nearly white; yellowish brown, yellow, colourless in transmitted light.
Streak	White, faintly coloured.
Luster	Sub-Adamantine, Vitreous, Resinous, Waxy
Refractive Index	n = 1.770 - 1.793 n = 1.778 - 1.800 n = 1.823 - 1.860
Diaphaneity	Translucent
Cleavage	Distinct/GoodOn , distinct; on , difficult; also on , , and , indistinct as observed at times.
Fracture	Irregular/Uneven, Conchoidal
Geological Setting：Pegmatites associated with granitic or syenitic igneous rocks.