Deep blue Vizhnevite from Vishnevogorsk, the type locality.
Vishnevite
Deep blue Vizhnevite from Vishnevogorsk, the type locality.
Blue Vishnevite in white Cancrinite from Karavan, a sub-locality of
Vishnevogorsk.
Vizhnevite from the 115 mine in the Ilmeny Gory
Microscopic grains of Vishnevite from Maly Murun. In this sample it is clearly
an alternation product of Nepheline.
The blue grains lay in a perfect hexagonal white crystal, which was once a
nepheline crystal.
[all photo/collection: Maurice de Graaf]