Dims: 0.9" x 0.7" x 0.6" (2.3 x 1.8 x 1.5 cm)
Wt: 15.1 g w/ base
N'Chwaning Mine, Hotazel, Kuruman, South Africa
This small thumbnail specimen contains some of the odder and more beautiful Hausmannite crystals that I think we have had available. There are at least 7 distinct crystals present on the specimen, though 4 of them are heavily intergrown, but all are in excellent condition and show no visible damage. The largest of these crystals measures 0.4 x 0.4 x 0.3" (1.0 x 1.0 x 0.8 cm), and is one of the several that are intergrown. Though I am unsure, I think that this multiple intergrowth has something to do with twinning. Most of the crystals have the standard tetragonal pseudo-octahedral form, but there is one that is long and slender, with a seemingly prismatic form! I think that this crystal's form also has something to do with twinning. All of them are colored black and have a bright, adamantine luster. They are held together by a matrix of white, crystalline calcite, and the piece is hot-glued onto a square acrylic base.