Tantalite,related to columbite,chemical formula ((Fe,Mn)(Ta,Nb)2O6). It is black to brown in colour,opaque,with prismatic crystals. Popular for mineral collectors. From Minas Gerais,Brazil | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Wiersma, Dirk |
Taille de l’image : | 4947 px × 3531 px |
Model Release : | Non requis |
Restrictions : | - |