Category Sulfate Crystal system Orthorhombic | Formula
(repeating unit) Na4Mg3Cu3(SO4)8 Space group Pbca | |
Crystal class Dipyramidal (mmm)
H-M symbol: (2/m 2/m 2/m) Unit cell a = 9.57, b = 8.79
c = 28.72 [Å] (approximated) | ||
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.
References
Itelmenite Wikipedia(Text) CC BY-SA