Vanadinite
Chemical Formula	Pb5(VO4)3Cl
Species	Phosphates
Crystal System	Hexagonal
Mohs Scale	2-3
Specific Gravity	6.8-7.1
Color	Orange-red, red-brown, brown, bright red, yellow, whitish; pale straw-yellow; colourless or weakly tinted in transmitted light.
Streak	brownish yellow
Luster	Sub-Adamantine, Resinous
Refractive Index	n = 2.416 n = 2.350
Diaphaneity	Transparent, Translucent, Opaque
Cleavage	None Observed
Fracture	Irregular/Uneven, Conchoidal
Crystal Habit：Prismatic or nodular; may be acicular, hairlike, fibrous; rarely rounded, globular
Geological Setting：A secondary mineral in the oxidized zone of lead bearing deposits.