Geocronite (very rare)

Item Description

Geocronite is a very rare lead antimony sulfosalt, typically found in micro crystals, but the specimens from historic Příbram area in the Czech Republic are some of the richest samples ever seen. This piece features a thick mass of metallic lead-grey Geocronite sitting atop matrix. The label states there is associated Galena on the specimen as well. While the Geocronite is not truly crystallized, there are some bright cleavage faces that can be seen on the edges where the piece was removed from the pocket wall. A very hard to find piece from one of the great mining areas in European history. From the worldwide collection of David Burgess (1951-2016) with a label from noted rare species dealer Josef Vajdak that states the piece was collected in the 19th Century! David was a prolific species collector from Newington, Connecticut, and the namesake for the extremely rare cobalt arsenate species Burgessite, which he discovered.