Mimetite
Chemical Formula	Pb5(AsO4)3Cl
Species	Phosphates
Crystal System	Hexagonal
Mohs Scale	3-4
Specific Gravity	7.1-7.24
Color	Pale to bright yellow, yellowish brown, yellow-orange, white, may be colorless
Streak	White
Luster	Sub-Adamantine, Resinous
Refractive Index	n = 2.147 n = 2.128
Diaphaneity	Transparent, Translucent
Cleavage	Poor/IndistinctIn traces on .
Fracture	Irregular/Uneven, Sub-Conchoidal
Crystal Habit：Prismatic to acicular crystals; reniform, botryoidal, globular,
Geological Setting：It is a secondary mineral found in the oxidized zones of lead mineral deposits, and in other settings where lead and arsenic occur together.