Kyanoxalite

kyanoxalite

nepheline

sodalite

nosean

Images

Formula: Na₇(Al_5-6Si_6-7O₂₄)(C₂O₄)_0.5-1.0.5H₂O
Tectosilicate, cancrinite group
Crystal System: Hexagonal
Specific gravity: 2.30 measured, 2.327 calculated
Hardness: 5 to 5½
Colour: Pale bluish, bright blue, greenish blue, greyish blue, colourless
Environments

Pegmatites

Kyanoxalite is a relatively new mineral, approved in 2008.

Localities

At the type locality, the Karnasurt Mountain, Lovozersky District, Murmansk Oblast, Russia, kyanoxalte occurs as colourless to pale bluish anhedral, isometric to prismatic grains to 2mm in size, typically in tiny veinlets between nepheline grains or as replacement rims surrounding sodalite-nosean masses in matrix. Associated minerals include sodalite, nosean, natrolite, murmanite, fluorapatite, albite and aegirine (Mindat).

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