Lorenzenite

Lorenzenite is a rare sodium titanium silicate mineral with the formula Na 9 It is an orthorhombic mineral, variously found as colorless, grey, pinkish, or brown crystals.

It was first identified in 1897 in rock samples from Narsarsuk, Greenland In 1947 it was discovered to be the same as the mineral ramsayite (now a synonym of lorenzenite), discovered in the 1920s in the Kola peninsula of Russia.

It occurs in nepheline syenites and pegmatites, nepheline, elpidite , astrophyllite , lavenite and ilmenite

It was named in honor of Danish mineralogist Johannes Theodor Lorenzen