Ammineite

Ammineite is the first recognized mineral containing ammine groups. Its formula is [CuCl2(NH3)2]. The mineral is chemically pure. It was found in a guano deposit in Chile. At the same site other ammine-containing minerals were later found:Chanabayaite, CuCl(N3C2H2)(NH3)·0.25H2O (an alternative formula), a triazolate mineral Joanneumite, Cu(C3N3O3H2)2(NH3)2, an isocyanurate mineral Shilovite, Cu(NH3)4(NO3)2

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