Wiktionary
tienshanite
n. (context mineralogy English) A hexagonal-dipyramidal pistachio green mineral containing barium, boron, manganese, oxygen, silicon, sodium, and titanium.
Wikipedia
Tienshanite
Tienshanite, named for the Tian Shan Range in Mongolia, is a rare borosilicate mineral, though rock-forming in some parts of its original locality at the Dara-i-Pioz Glacier in Tajikistan. Its formula is extremely complex: KNa(Na,K,[])6(Ca,Y,RE)Ba(Mn,Fe,Zn,Ti)(Ti,Nb)SiBO[O(OH,F)]F.