Dims: 3.1 x 2.4 x 2.1" (7.9 x 6.1 x 5.3 cm)
Wt: 13.1 oz. (372 g)
Kuse Mine, near Bau, Sarawak, Borneo
This hand specimen consists of a thick layer of weathered, semicrystalline Arsenic that partly coats a base made up of quartz and more Arsenic. The crust shows little in the way of actual crystal form, but has the odd face or edge that appear to be intact. All of the Arsenic has a dull, brown-black color and most shows a matte luster, but a few small patches show a dull metallic shine. Atop this Arsenic crust lies a very small crust of weathered white calcite and a damaged spray of small stibnite needles. More of these needles accompany the Arsenic that is trapped in the white, crystalline quartz base. This Arsenic is far less intergrown and shows better crystal form.