Malachite on Calcite   Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia.  Ex. Thomas G. Fowler collection.  An uncommon mineral as primary crytsals from Tsumeb.  This piece is 5.1 x 4 x 3.5 cm and is well coated with vibrant crystals of deep green malachite.  Excellent condition.  A couple contacts that appear natural on the ball like formations.  $400