Wiktionary
huemulite
n. (context mineral English) A triclinic-pinacoidal mineral containing hydrogen, magnesium, oxygen, sodium, and vanadium.
Wikipedia
Huemulite
Huemulite is a mineral with formula NaMg(VO)ยท24HO that is yellow to orange in color. It was first discovered in Argentina in 1959 and described in 1966. The mineral is named for the Huemul mine in which it was discovered.