Occurs in Pinal County. Common in Arizona.
Chemical Formula: Pb5(AsO4)3Cl
Specific Gravity: 7.25-7.4
Luster: Adamantine to resinous
Hardness: 3.5-4
Mimetite is a lead arsenate chloride mineral that often forms as yellow to orange crystals or coatings. It is found in the oxidation zones of lead ore deposits.