Mineralpedia Details for Ilmajokite
Named for the type and only locality near the Il’majok River in the Kola Peninsula in Russia. Ilmajokite is a rare mineral that occurs only at its type locality “on the walls of cavities in the central natrolite zone of pegmatites in a differentiated alkalic massif.” Associated minerals include sphalerite, halite, mountainite, nahcolite, and aegirine. Ilmajokite is water soluble.
Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/ilmajokite.pdf
Ilmajokite from Yubileinaya pegmatite, Karnasurt Mt., Lovozero Massif, Kola Peninsula, Russia
Ilmajokite, a rare titanium silicate, was the first new mineral discoverd from this pegmatite. The coverage is about 4x3mm.