Mottramite, Calcite – Tsumeb, Otavi, Namibia
 Ex Kranz
 Former Peter Pichler Collection
 A historic showcase specimen of the rare mineral mottramite with calcite from the extinct Tsumeb Mine. The olive-green, dendroidal mottramites are beautifully crystallized and in good condition.
 The stage comes with a handwritten label by Kranz (unfortunately without a year indication) and a label by Sammer Peter Pichler, who acquired it in 1968.