Determination of zincrosasite in Qaleh Zari mine, Birjand- Iran 

There were unknown light blue minerals from Qaleh Zari mine in the Geo Science Museum of Mashhad that were growth on hemimorphite. Two minerals have been chosen and studied by Atomic Absorption, Scanning Electron Microscopy and X-ray diffraction. The results of studies are: The Cu and Zn ratio is comparable with the other zincrosasite in the word. It was recognized Cu-Zn carbonate hydroxide phase by EDS analyze and beautiful images were taken by SEM backscattered. XRD analyze identified rosasite with hemimorphite in a spacemen.

Rosasite and zincrosasite have a spread Cu and Zn ratio, occurring with hydrozincite, auricalcite, hemimorphite, cerussite and malachite in alkaline environments.

Keywords: rosasite, zincrosasite, Scanning Electron Microscopy, Qaleh Zari mine, Iran

Rosasite and zincrosasite are rare known secondary minerals that occur in oxidation zone in Cu-Zn ore deposits that wasn’t report from Qaleh Zari mine before.

They form by action between Zn bearing solutions and cupric minerals. Their general formula is A2(CO3) (OH)2 or AB(CO3) (OH)2 . Places of A and B can fill by Co, Cu, Mg, Ni and Zn to make seven rare minerals