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Rutile
Intact, sharp-edged, lustrous, black crystal; chemical analysis shows zonation with a majority of tantalum-rich rutile and a niobium-rich rutile core (22% Ta2O5, 20% Nb2O5, 35% TiO2).
Product details
Species
Locality
Mina Golconda, Governador Valadares, Vale do Doce, Minas Gerais,
Added on11/10/2024
Known provenance
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