Formula: (Cu,Zn)2Zn(PO4)(OH)3.2H2O
Hydrated phosphate containing hydroxyl
Crystal System: Monoclinic
Specific gravity: 3.4 measured, 3.42 calculated
Hardness: 3½ to 4
Streak: Green to white
Colour: Green, blue, greenish blue, dark blue; greenish blue in transmitted light
Solubility: Soluble in acids

Hydrothermal environments

Veszelyite is a rare secondary mineral occurring in the oxidised zones of base metal deposits, associated with aurichalcite, brochantite, hemimorphite, kipushite, libethenite, malachite and pseudomalachite (Mindat).


At the Kipushi mine, Kipushi, Haut-Katanga, DR Congo, veszelyite is associated with pseudomalachite, malachite, hemimorphite, pyromorphite, kipushite, vauquelinite, libethenite, quartz and iron oxides (HOM).

At the Palabanda quarries, Mfouati, Mfouati District, Bouenza Department, Republic of the Congo, deep blue veszelyite is associated with light blue hemimorphite (Dr Marco Tam Shing Yau, The Mineralogy Society of Hong Kong Newsletter 19.8).

The type locality is Ocna de Fier, Ocna de Fier-Dognecea District, Banat Mountains, Caraş-Severin, Romania.

At Wanlockhead, Dumfries and Galloway, Scotland, UK, veszelyite is associated with hemimorphite, malachite, aurichalcite and brochantite (HOM).

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