Wulfenite on Zincolivenite

Item Description

A beautiful miniature specimen featuring attractive rich emerald green crystals of Zincolivenite (formerly known as "Cuproadamite" on old labels) which play host to a couple thin blades of Wulfenite measuring up to 2 mm. For a long time, these crystals from Tsumeb were thought to be Cuproadamite, but recent analysis has shown they are in fact the recently approved species Zincolivenite (not to be confused with zinc-bearing Olivenite) which according to mindat.org is an, "intermediate member of the solid solution series between Olivenite and Adamite with a Zn:Cu ratio of (ideally) 1:1;". All of the former "Cuproadamites" from Tsumeb are now being relabeled as Zincolivenite. This is one of the VERY few examples we've seen featuring Wulfenite on Zincolivenite, so if you collect Tsumeb minerals, don't miss out on this one.
From the collection of Robert (Bob) Reynolds. Bob was a well-known fossil and mineral expert and former Curator of Earth Sciences at the San Bernardino County Museum in California. The rare phyllomanganate-chromate species Reynoldsite was named in his honor in 2011. The piece is accompanied by a label from noted collector Al McGuinness.