Shattuckite
Image: <a href="//commons.wikimedia.org/wiki/User:Rept0n1x" title="User:Rept0n1x">Rept0n1x</a> (CC BY-SA 3.0)
Mineral NameShattuckite
Chemical FormulaCu5(SiO3)4(OH)2
Mohs Hardness3.5
Crystal Systemorthorhombic
Lustervitreous
Streak Colorlight blue
Cleavagegood on {100}
Fractureconchoidal to uneven
Specific Gravity3.8
Colorsdeep blue, sky blue
Transparencytranslucent
Type LocalityBisbee, Arizona, USA
Mineral GroupSilicates
Usescollector, lapidary
Associated Mineralsmalachite, chrysocolla, plancheite, quartz
Rarityuncommon
Description
Shattuckite is a striking deep blue copper silicate mineral, often forming fibrous spherules, aggregates, or crusts, sometimes associated with green malachite.
Geological Context
It is a secondary mineral formed in the oxidized zone of copper ore deposits, typically found in arid regions where copper mineralization has occurred.
