copper
Copper is a chemical element with the symbol Cu (from la, cuprum) and atomic number 29. It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. A freshly exposed surface of pure copper has a pinkish ...
generally; more specifically:
;Minerals
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Apachite
Apachite is a copper silicate mineral with a general formula of Cu9Si10O29·11H2O.American Geological InstituteUniversity of Texas Libraries. "Glossary of Geology." September 8, 2010 The name is associated with the Apache tribe residents of the ar ...
, a copper silicate mineral with a general formula of Cu9Si10O29·11H2O
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Dioptase
Dioptase is an intense emerald-green to bluish-green copper cyclosilicate mineral. It is transparent to translucent. Its luster is vitreous to sub- adamantine. Its formula is Cu6Si6O18·6H2O (also reported as CuSiO2(OH)2). It has a hardness o ...
, a cyclosilicate mineral - CuSiO3·H2O
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Gilalite
Gilalite is a copper silicate mineral with chemical composition of Cu5Si6O17·7(H2O).
It occurs as a retrograde metamorphic phase in a calc-silicate and sulfide skarn deposit. It occurs as fracture fillings and incrustations associated with dio ...
, a copper silicate mineral with chemical composition of Cu5Si6O17·7(H2O).
* Plancheite, a hydrated copper silicate mineral with the formula Cu8Si8O22(OH)4•(H2O)
* Shattuckite, a copper silicate hydroxide mineral with formula Cu5(SiO3)4(OH)2
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Chrysocolla
Chrysocolla ( ) is a hydrated copper phyllosilicate mineral and mineraloid with formula (x<1) or .
The structure of the mineral has been questioned, as a 2006 spectrographic study suggest material identified ...
is a hydrated copper phyllosilicate mineral (with aluminum) with formula: Cu2−Al(H2−Si2O5)(OH)4·H2O (<1)
;Mixed metal copper silicate minerals
* Abswurmbachite, a copper manganese silicate mineral
* Ajoite is a hydrated sodium potassium copper aluminium silicate hydroxide mineral
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Ashburtonite
Ashburtonite is a rare lead copper silicate-bicarbonate mineral with formula: HPb4Cu2+4Si4O12(HCO3)4(OH)4Cl.
Geological occurrence
Ashburtonite was first described as a secondary mineral in a shear zone in a series of shales and graywackes. It i ...
, a rare lead copper silicate-bicarbonate mineral
* Iranite (Persian: ایرانیت), a lead copper chromate silicate mineral
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Larimar
Larimar is the tradename for a rare blue variety of the silicate mineral pectolite found only in the Dominican Republic, around the city of Barahona. Its coloration varies from bluish white, light-blue, light-green, green-blue, turquoise blue, t ...
, also called "Stefilia's Stone", is a rare blue variety of the silicate mineral pectolite that contains copper
* Papagoite, rare cyclosilicate mineral - calcium copper aluminium silicate hydroxide
* Scottyite, a barium copper silicate
;Pigments
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Egyptian blue
Egyptian blue, also known as calcium copper silicate (CaCuSi4O10 or CaOCuO(SiO2)4 (calcium copper tetrasilicate)) or cuprorivaite, is a pigment that was used in ancient Egypt for thousands of years. It is considered to be the first synthetic pi ...
, also known as calcium copper silicate or cuprorivaite, a pigment used in ancient Egypt
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Han purple and Han blue
Han purple and Han blue (also called Chinese purple and Chinese blue) are synthetic barium copper silicate pigments developed in China and used in ancient and imperial China from the Western Zhou period (1045–771 BC) until the end of the Han ...
, also called Chinese purple and Chinese blue, synthetic barium copper silicate pigments developed in China and used in ancient and imperial China onwards
See also
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Copper silicide
Copper silicide can refer to either or pentacopper silicide, .
Pentacopper silicide is a binary compound of silicon with copper. It is an intermetallic compound, meaning that it has properties intermediate between an ionic compound and an alloy ...