Editing Copper(II) nitrate (section)

==Naturally occurring copper nitrates==
No mineral of the ideal {{chem2|Cu(NO3)}} formula, or the hydrates, are known. Likasite, {{chem2|Cu3(NO3)(OH)5*2H2O}} and buttgenbachite, {{chem2|Cu19(NO3)2(OH)32Cl4*2H2O}} are related minerals.<ref name=min2399>{{Cite web |url=https://www.mindat.org/min2399.html |title=Likasite |website=www.mindat.org}}</ref><ref name=min811/>

{{anchor|gerhardtite}} Natural basic copper nitrates include the rare minerals [[gerhardtite]] and rouaite, both being polymorphs of {{chem2|Cu2(NO3)(OH)3}}.<ref>{{Cite web |url=https://www.mindat.org/min-1680.html |title=Gerhardtite |website=www.mindat.org}}</ref><ref>{{Cite web |url=https://www.mindat.org/min-10588.html |title=Rouaite |website=www.mindat.org}}</ref><ref name=IMA>{{Cite web |url=https://www.ima-mineralogy.org/Minlist.htm |title=List of Minerals |date=21 March 2011 |website=www.ima-mineralogy.org |author=International Mineralogical Association}}</ref> A much more complex, basic, hydrated and chloride-bearing natural salt is buttgenbachite.<ref name=min811>{{Cite web |url=https://www.mindat.org/min811.html |title=Buttgenbachite |website=www.mindat.org}}</ref><ref name=IMA/>