Dims: 2.1" x 2.0" x 1.2" (5.3 x 5.1 x 3.0 cm)
Wt: 2.82 oz. (80.2 g)
#2 Open Pit, Broken Hill Mine, Kabwe, Zambia
Though not very colorful, the Tarbuttite crystals that line the crevice in this dull limonite host rock have excellent form, and a rather interesting one, at that. They are small, not exceeding 0.3" (8 mm) in any dimension, and show a dull pearly luster. Oddly, the two main faces on these tabular crystals seem to be coated with a thin, milky layer of the material, whereas their thinner faces are clear. Thus, they are transparent and moderately clear when viewed from all directions except two. Their triclinic form is excellent, and only the most exposed crystals show any damage. They appear to be nearly rhombohedral in form, and are easy to see against the dull red-brown color of their limonite host.