Dims: 2.5" x 1.4" x 0.8" (6.4 x 3.6 x 2.0 cm)
Wt: 1.14 oz. (32.4 g)
Brumado Mine, Bahia, Brazil
This specimen consists of a crust made up of scores of heavily-intergrown Uvite crystals. The largest of these crystals has visible dimensions of 0.5 x 0.2" (1.3 x 0.5 cm), and though it is incomplete and has a warped form, it is undamaged. The entire cluster is likewise free from damage, with the exception of some of the crystals on the crust's edge. All have the hexagonal, almost tabular form that is common for crystals from this locality, but these are thicker than most that I have seen. They are double-terminated with the obligatory shallow trigonal domes, and their form is excellent, though their intergrowth has caused some slight warping in some spots. They have a deep olive-green coloration and a bright, vitreous luster, and are transparent and moderately clear, showing many internal fractures. Besides the Uvite, there is only a single, clear, incomplete quartz crystal visible on the crust's underside. Some of the Uvites are so thick that they could, in effect, be considered prismatic.