Dims: 1.8 x 0.8 x 0.7" (4.6 x 2.0 x 1.7 cm)
Wt: 15 g
Rossing Mine, Swakopmund District, Namibia
A single spray of radiating Boltwoodite crystals rest on the sandstone base of this hand specimen. The crystals that make up the spray do not exceed 0.2" (4 mm) in length and are generally in good condition, though the spray does show some light damage in one area. The crystals are too fine for easy study, but likely have good monoclinic form. Their deep yellow color and pearly luster are standard. They rest on a bed of siderite or calcite that is coated with what could be a thin layer of goethite- I doubt that it is uraninite, in any case. Radiation from this piece is readily detected on most standard radiation meters and geiger counters.