Tags: Chemical Substance, Mineral.
Narsarsukite is a rare silicate mineral with chemical formula Na2(TiFe3+)Si4(OF)11 or Na4(TiFe)4[Si8O20](OOHF)4.It was first described in 1900 for an occurrence in the Narsarsuk pegmatite in the Ilimaussaq intrusive complex of West Greenland. It has also been reported from a syenite which intruded limestone in the Sweetgrass Hills Montana and within hornfels and marble xenoliths in the alkalic intrusive of Mont Saint-Hilaire Quebec.
