Occurs in Pinal County.
Chemical Formula: Mg6(CO3)(OH)10•2H2O
Specific Gravity: 2.1
Hardness: 2.5-3
Bobmeyerite is a rare hydrated magnesium carbonate mineral. It usually forms in fibrous masses or as coatings on other minerals. The pearly Luster is characteristic. Named from specimens collected in Pinal County, Arizona.