Calcite with Conichalcite (ex Kay Robertson Collection)

Item Description

Sharp, well-formed, translucent, white / colorless rhombs of Calcite measuring up to 1.1 cm are sitting on a layer of stark lime green Conichalcite on matrix from Tsumeb. The piece is in great shape, with only a few minor imperfections. A classic piece of this attractive association from this beloved locality. Valued at $500. Ex Kay Robertson Collection (#8635). Kay is a prominent California collector, who specialized in European classics (see the article in the March-April, 2007 Mineralogical Record and the 50+ page article in the German Magazine "Mineralien Welt" November-December 2017).