narsarsukite
/ˌnɑːsɑːˈsʊkʌɪt/Mineralogy
noun
A yellow silicate and fluoride of sodium, iron, and titanium, Na2(Ti,Fe)Si4(O,F)11, occurring as transparent or translucent crystals of the tetragonal system.
Origin
Early 20th century. From Narsarsuk, the name of a plain in south-western Greenland + -ite.