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Pyroxmangite - Molinello mine - Graveglia Valley - Ligury - Italy
(#:MINS8959)
Specimen rich of Pyroxmangite xls up to 2 mm set on matrix. A rare manganese specie.
Formula :
(Mn
2+
,Fe
2+
)
7
[Si
7
O
21
]
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.
Specimen weight:50 gr.
Crystal size:Up to 2 mm
Overall size: 57mm x 45 mm x 20 mm
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