Category Inosilicates Strunz classification 9.DG.25 Space group P212121 | Formula
(repeating unit) K2ZrSi3O9·H2O Crystal system Orthorhombic | |
Crystal class Disphenoidal (222)
H-M symbol: (222) | ||
Umbite (K2(Zr,Ti)Si3O9·H2O) is a potassium zirconosilicate mineral found in northern Russia. Named after Lake Umb (Lake Umbozero), its type locality is Vuonnemiok River Valley, Khibiny Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia.
References
Umbite Wikipedia(Text) CC BY-SA