Formula : (Mn2+,Fe2+)7[Si7O21]
System: triclinic Hardness:5½-6 Rarity:rare
Strunz id:VIII/F.31-20 -
SILICATES
Name origin: Named in 1913 by William E. Ford and W. M. Bradley from PYROXene and MANGanese, in allusion to its structure and content of Manganese.
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