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Mineralpedia Details for Glagolevite

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Glagolevite

Glagolevite

Formula
NaMg6(Si3Al)O10(OH)8┬ĚH2
Crystal System
Triclinic 
Crystal Habit
Granular 
Cleavage
Perfect, None, None 
Luster
Vitreous - Pearly 
Color
colorless 
Streak
white 
Class
Triclinic - Pedial 
Fracture
Flexible 
Hardness
3-4 
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Glagolevite from Iron mine, Kovdor Massif, Kola Peninsula, Russia

Glagolevite
            from Iron mine, Kovdor Massif, Kola Peninsula, Russia
Special Info
Type & Only Locality

Glagolevite is thus far a one-locality mineral, that being the Kovdor Phlogopite mine. On this specimen the flashy plates you see in the photos are the Glagolevite. It is a phyllosilicate with one perfect {001} cleavage, which explains the flashes of light when you hold this in-hand. The colorless plates occur amongst crystal grains of Vesuvianite, Andradite, and Diopside, which are all of various light green colors. Some of the Glagolevite shows good crystal outlines.

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