Zabuyelite
Zabuyelite is the natural mineral form of lithium carbonate, with a formula Li2CO3. It was discovered in 1987 at Lake Zabuye, Tibet, after which it is named. It forms colorless vitreous monoclinic crystals.
It occurs as inclusions within halite in lithium rich evaporites and as solid phase in fluid inclusions in the mineral spodumene. Associated minerals include halite, gaylussite and northupite in the Tibet locality.