- Small Cabinet, 6.1 x 5.8 x 4.2 cm
- Caicara pegmatite, Picui, Borborema mineral province, Paraiba, Northeast Region, Brazil
An exceptionally fine, fairly sharp and euhedral, two-sided manganotantalite crystal from an uncommon Brazilian locality - the Caicara Pegmatite in Paraiba. The front is moderate-luster, metallic-gray with rust-red highlights. The partially contacted back is a highly lustrous rust-red color. The note on the back of the Sensel label states that he bought the piece in 1974 from Dick Hauck. Weighs 447 grams or nearly a pound. Ex. Sensel and George Elling Collections.