Dims: 4.4 x 3.5 x 2.8" (11.2 x 8.9 x 7.1 cm)
Wt: 1 lb., 13.1 oz. (824 g)
Harts Range, Northern Territories, Australia
This attractive specimen consists of a formation of intergrown reniform Goethite nodules. These nodules are mostly broken, allowing one to see evidence of its pre-existing compact, fibrous form. These exposed portions have a generally black color (brown bands run through them, however), and appear to be either polished or coated with a thin layer of lacquer that improves the luster. Those surfaces that are not broken tend to be covered with a thin layer of rough, brown material that is probably made of limonite. There are also a few smatterings of a dull, white mineral that could be calcite or dolomite.