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Mineralpedia Details for Manganvesuvianite

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Manganvesuvianite

Manganvesuvianite

Named for the relationship to vesuvianite and for the dominance of manganese in the chemical composition. A rare mineral found in South Africa at the Wessels mine as crystals in veins and vugs, and at the N’Chwanning II mine, the type locality, as a rock forming mineral in association with grossular and xonotlite. Also found in the Harstigen mine in Varmland, Sweden. Manganvesuvianite forms as red to lilac and black prismatic crystals.

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

Formula
Ca19Mn3+Al10Mg2(SiO4)10(Si2O7)4O(OH)9 
Crystal System
Tetragonal 
Crystal Habit
Prismatic 
Luster
Vitreous (Glassy) 
Color
deep maroon red 
Streak
white 
Class
Tetragonal - Dipyramidal 
Fracture
Brittle - Subconchoidal 
Hardness
6-7 
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Manganvesuvianite from N'Chwaning II mine, Kalahari Mn fields, Northern Cape Province, South Africa

Manganvesuvianite
            from N'Chwaning II mine, Kalahari Mn fields, Northern Cape Province, South Africa

Dark cherry red prismatic, exceptional crystals to 2mm.

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