Occurs in Pinal County.
Chemical Formula: PbO
Specific Gravity: 9.1
Luster: Adamantine to earthy
Hardness: 2-2.5
Massicot is a lead oxide mineral that often appears as yellow to brownish-yellow or reddish-brown masses or coatings. It is found in the oxidation zones of lead ore deposits.
Next Pinal County mineral: Matlockite