FEATURED ITEM $65 Min Bid - MANGANOTANTALITE, MnTa2O6, Arto de Furnas Mine, Equador, Minas Gerais, Brazil, 2 x 2 x 2 cm, | |
This is thumbnail sized crystal of Manganotantalite which is also Twinned. These are uncommon and not seen very often. The chemical formula is MnTa2O6 |