Bright red Villiaumite filling the gaps between Natrolite crystals, Kedykverpakhk.

A 1cm crystal of Villiaumite from Koashva. 

Inclusions of red Villiaumite in blue Kogarkoite from Alluaiv. A typical saline paragenese is often observed
in the central part of hydrothermal bodies in Lovozero. Khomyakov made an interesting study of these

[photo's/collection: Maurice de Graaf]