Description
EIGHTEEN NAMIBIAN MINERALS Tsumeb and other localities Including a slab of Pietersite; two dioptase in matrix; a copper; a cobaltian dolomite, Tsumeb ; an azurite on smithsonite; a double-terminated quartz; a tarbuttite; a calcite with mottramite; a duftite on calcite; a cuprite on copper; a wollastonite; a schorl; a cerrusite;...