Brochantite   Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia.  Ex. Thomas G. Fowler collection.  This is a small piece, 4.7 x 2.7 x 2.5 cm, that has one surface coated by greenish blue brochantite sprays of acicular crystals and small crystals of an unidentified, water clear mineral.  No damage.  $300