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Tantalite-(Mn) - Alto do Giz pegmatite, Equador, Rio Grande do Norte, Brazil
(#:MINS9302)
Tantalite-(Mn) crystal measuring 1,5 x 1,0 cm on pegmatite matrix.
Formula :
Mn
2+
Ta
2
O
6
System:
orthorhombic
Hardness:
6-6½
Rarity:
not common
Strunz id:IV/D.18-50 - OXIDES and HYDROXIDES
Name origin:
From the manganese content and for the Greek mythical figure Tantalus - for its difficulty in dissolving.
Specimen weight:18 gr.
Crystal size:1,5 x 1,0 cm
Overall size: 22mm x 20 mm x 30 mm
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