A relatively large, single Columbite/Tantalite crystal which is black in color with a submetallic luster. There are interesting growth patterns on the surfaces of the crystals.
Condition: Good
Flaws: There are a couple of places on the edges where there are minor chips.
This mineral is also found in the following galleries: Minerals From Brazil | Oxides and Hydroxides | Rare Minerals | Minerals Priced Between 300 and 499 Dollars