Rutile

There are numerous prismatic crystals of rutile to 1.4 cm in length and quite a bit of chalcopyrite with hematite rich clay coating. The chalcopyrite appears to have grown into pre-existing calcite crystals which are long gone. There are also many crystals of biotite present.

Origin: Onganja Mine, Seeis, nr. Windhoek, Namibia, Africa

Sample size: 7.6 x 4.6 x 2.5 cm

Brilliantly lustrous hematite with radiating, straw-like crystals of golden rutile.
Origin: Novo Horizonte, Bahia, Brazil, South America

Sample size: 5.4 x 3.6 x 1.7 cm (top), 4.3 x 2.9 x 0.4 cm (2nd row), 4 x 3 x 0.3 cm (3rd row), 4 x 3.1 x 1.1 cm (4th row), 4.2 x 4 x 1.4 cm (5th row), 4.6 x 3.6 x 1.7 cm (6th/7th row), 3.7 x 3.2 x 0.8 cm (8th row), 3.8 x 3 x 0.8 cm (9th/bottom row)