Itelmenite is a rare sulfate mineral with the formula Na4Mg3Cu3(SO4)8. It is one of many fumarolic minerals discovered on the Tolbachik volcano.
Relation to other minerals Saranchinaite and dravertite are examples of other anhydrous complex copper-bearing sulfates, also coming from the Tolbachik volcano.
External links Itelmenite on Mindat: "Itelmenite: Itelmenite mineral information and data". Mindat.org. Retrieved 2016-03-13.
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