Dims: 2.9" x 2.0" x 1.6" (7.4 x 5.1 x 4.1)
Wt: 4.74 oz. (134.5 g)
Musonoie Mine, Shaba Province, Zaire
This hand specimen consists of several clusters of square, tabular Torbernite crystals that are resting on a weathered, pale brown host rock that is permeated with veins of massive malachite. Though none of these crystals exceeds 0.1" (3 mm) in any dimension, they are in excellent condition, showing almost no damage, and have excellent tetragonal tabular form. Their color is the standard grass-green for this mineral, their luster is pearly, and all are dimly transparent. As with most copper-based minerals, these crystals will not glow under UV light, even with their uranium content. There are a few small hollows scattered on the specimen that contain a few more Torbernite blades, and several small areas that show shards of broken crystals. The malachite that pervades the host rock is massive and formless, showing a dull, waxy luster.