Itelmenite is a rare sulfate mineral with the formula Na4Mg3Cu3(SO4)8. It is one of many fumarolic minerals discovered on the Tolbachik volcano.[2][3]
Itelmenite | |
---|---|
General | |
Category | Sulfate |
Formula (repeating unit) | Na4Mg3Cu3(SO4)8 |
IMA symbol | Itm[1] |
Crystal system | Orthorhombic |
Crystal class | Dipyramidal (mmm) H-M symbol: (2/m 2/m 2/m) |
Space group | Pbca |
Unit cell | a = 9.57, b = 8.79 c = 28.72 [Å] (approximated) |
Identification | |
References | [2] |
Saranchinaite and dravertite are examples of other anhydrous complex copper-bearing sulfates, also coming from the Tolbachik volcano.[4][5]