Images
Formula: K2MnTi4(Si4O12)2(OH)4.5-6H2O
Cyclosilicate (ring silicate), manganese and
titanium bearing mineral
Crystal System: Monoclinic
Specific gravity: 2.67 to 2.97
Hardness: 5
Streak: White
Colour: Colourless to yellow to dark orange.
Common impurities: Fe
Environments
Localities
At the type locality, Selsurt Mountain, Lovozersky District, Murmansk Oblast, Russia, kuzmenkoite-Mn occurs in
minute cavities in albitised
murmanite-bearing lujavrites.
It is a late hydrothermal phase associated with natrolite,
labuntsovite,
calciohilairite,
vinogradovite and carbonate-rich
fluorapatite. Minerals formed earlier include
aegirine, albite,
eudialyte, lorenzenite,
murmanite,
magnesio-arfvedsonite,
microcline and nepheline.
Kuzmenkoite-Mn also occurs as pseudomorphs of
murmanite.
(AM 85.1562).
Back to Minerals