Calcite with Mottramite    Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia.  Ex. Thomas G. Fowler collection.  This fine cluster of calcite rhombs is 8.7 x 6.2 x 3.5 cm.  It is very three-dimensional with no points of attachment. A minor rub on back and a couple small edge areas. All things considered it is in outstanding condition.  $240