Occurs in Pinal County. Common in Arizona.
Chemical Formula: HgS
Specific Gravity: 8.1-8.2
Luster: Adamantine to dull
Hardness: 2-2.5
Cinnabar is a mercury sulfide mineral and is the primary ore of mercury. It has a bright red to reddish-brown color and is often associated with hot spring deposits.
Next Pinal County mineral: Clinoatacamite