Ilyukhinite
| Ilyukhinite | |
|---|---|
| General | |
| Category | Silicate mineral, cyclosilicate |
| Formula | see text |
| IMA symbol | Ily |
| Crystal system | Trigonal |
| Crystal class | Ditrigonal pyramidal (3m) H-M symbol: (3m) |
| Space group | R3m |
| Unit cell | a = 14.1695, c = 31.026 [Å] |
| Identification | |
| References | |
Ilyukhinite is a very rare mineral of the eudialyte group, with formula (H3O,Na)14Ca6Mn2Zr3Si26O72(OH)2·3H2O. The formula given is simplified and does not show the presence of cyclic silicate groups. Ilyukhinite is the second group representative with species-defining hydronium ion after aqualite.