Is Shattuckite the same as chrysocolla?

Is Shattuckite the same as chrysocolla?

Shattuckite is a copper silicate hydroxide mineral 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. It is closely allied to plancheite in structure and appearance.

Shattuckite is a relatively rare copper silicate mineral. It was first discovered in 1915 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. It is sometimes used as a gemstone.[4]

Gallery

Shattuckite with malachite, about 4 cm wide. Kaokoveld Mine, Namibia

Shattuckite crystals form concentric circular clusters of spraying, elongated, acicular crystals. Associated with them are small bits of contrasting primary malachite crystals in a deep green color

Botryoidal balls of shattuckite, from the Kaokoveld Mine, Kaokoveld Plateau, Kunene Region, Namibia

Polished shattuckite with malachite, New Cornelia mine, Ajo, Arizona. Size 5.3×5.1×5.0 cm

References
Wikimedia Commons has media related to Shattuckite.
Shattuckite. Webmineral.com. Retrieved on 2011-10-10.
Shattuckite. Mindat.org (2011-09-08). Retrieved on 2011-10-10.
Shattuckite. Handbook of Mineralogy. (PDF) . Retrieved on 2011-10-10.
http://www.minerals.net/mineral/shattuckite.aspx
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