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Chemical formulaCu5(SiO3)4(OH)2
ColorDark and light blue, turqoise
Cleavageperfect in two directions.
Mohs Scale hardness3.5
LusterDull to vitreous
Optical Propertiestranslucent to opaque
Specific gravityapproximately 4.1 (rather heavy for a non-metallic mineral)

Shattuckite is a mineral, a copper silicate hydroxide with formula Cu5(SiO3)4(OH)2. It crystallizes in the orthorhombic - dipyramidal crystal system and usually occurs in a granular massive form and also as fibrous acicular crystals.

Shattuckite is a relatively rare copper silicate mineral. It was first discovered in the copper mines of Bisbee, Arizona, specifically the Shattuck Mine (hence the name). It is a secondary mineral that forms from the alteration of other secondary minerals. At the Shattuck Mine, it forms pseudomorphs after malachite. A pseudomorph is an atom by atom replacement of a crystal structure by another crystal structure, but with little alteration of the outward shape of the original crystal.


  • Webmineral data
  • Mindat with location data
  • Mineral Data Publishing


This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Shattuckite". A list of authors is available in Wikipedia.
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