Narsarsukite

Silicate mineral

Narsarsukite is a rare silicate mineral with chemical formula Na2(Ti,Fe3+)Si4(O,F)11 or Na4(Ti,Fe)4

It was first described in 1900 for an occurrence in the Narsarsuk pegmatite in the Ilimaussaq intrusive complex It has also been reported from a syenite in the Sweetgrass Hills and marble in the alkalic intrusive, Quebec It occurs associated with aegirine , elpidite, pectolite

Identification

Color of mineral

Yellow

Red

Brown

Grey

Pink

Green

Mohs scale ( mineral hardness )

5.5

Density ( specific gravity )

1.609

1.63

Luster ( interacts light )

Vitreous

Pearly

Crystal ( diaphaneity )

Tetragonal