Tarnowitzite on Calcite    Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia.  Ex. Thomas G. Fowler collection.  An unusual find measuring 10 x 7.5 x 5.7 cm.  Good mineralization by prismatic crystals of tarnowitzite to 2 cm each on amber colored calcite rhombs.  Back is all calcite.  Base and one edge are contacts and not mineralized.  Very good condition with a couple of small rubs on calcites.  $420