Color is blue-green to light green. Luster is dull to vitreous. Transparency specimens are transparent to translucent. Crystal System is triclinic, bar 1. Growth Habits include acicular to thin prismatic crystals often found as spherules or sprays of acicular radial crystal clusters and as massive specimens.
Cleavage is perfect.
Hardness is 3.5. Streak is pale greenish white. Associated Minerals are quartz , limonite , mimetite , phoenicochroite , willemite , wickenburgite , shattuckite , copper , papagoite , plancheite , duftite and other secondary copper minerals. Notable Occurrences are limited to the New Cornelia Mine, Ajo District, Pima County and Wickenburg, Maricopa County, Arizona , USA and the Messina District, South Africa. Best Field Indicators are color, crystal habit, locality and associations.