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Mineralpedia Details for Manganonordite-(Ce)

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Manganonordite-(Ce)

Manganonordite-(Ce)

Named for being the Mn2+ analogue of the mineral nordite-Ce. Found only at the co-type localities at the Kedykverpakhk Mountain and the Karnasurt Mountain, both in the Lovozero massif of the Kola Peninsula of Russia. Occurs as colorless to pale brown, thin, platy crystals in rosettes or spherulites in sodalite syenites and ussingite veins.

Ref. Minerals and their Localities, Bernard, J.H. and Hyršl, J. (2004)

Formula
Na3SrCeMn2+Si6O17 
Crystal System
Orthorhombic 
Crystal Habit
Tabular, Rosette 
Cleavage
Perfect, None, None 
Luster
Vitreous (Glassy) 
Color
pale brown, colorless, brown 
Streak
white 
Class
Orthorhombic - Dipyramidal 
Fracture
Brittle - Uneven 
Hardness
5-5.5 
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Manganonordite-(Ce) from Pegmatite #60, Karnasurt Mt., Lovozero Massif, Kola Peninsula, Russia

Manganonordite-(Ce)
            from Pegmatite #60, Karnasurt Mt., Lovozero Massif, Kola Peninsula, Russia

Brown to amber embedded crystals froming a rosette to 5mm. RARE.

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