Some common Cu minerals and their chemical formulas

 

Major Group

Chemical Formula

Comments

Oxides, native metal

 

 

  Tenorite

CuO

Common in nature and in distribution systems (DS)

Cuprite 

Cu2O

Common in nature and DS

  Native copper

Cu

Common in nature, rare in DS as a corrosion byproduct

 Chrysocola

(Cu,Al)2H2Si2O5(OH)4.nH2O

 

Common in nature, rare in DS

Carbonates

 

 

 Malachite

Cu2CO3(OH)2

Common in nature and DS

  Azurite

Cu3(CO3)2(OH)2

Common in nature and DS

Phosphates

 

 

  Pseudomalachite

Cu5(PO4)2(OH)2

Found in nature, DS distribution unknown

Chlorides

 

 

 Atacamite

Cu2Cl(OH)3

Found in nature and in DS

Sulfates

 

 

Brochantite 

Cu4SO4(OH)3

Common in nature and in DS

Posnjakite1

Cu4SO4(OH)3.H2O

Found in nature and in DS

Langite

Cu4SO4(OH)3.2H2O

Found in nature, common in DS

1The MINTEQ database uses this formula for Langite