Agrellite (very rare) (ex David Burgess Collection)

Item Description

Agrellite is a very rare sodium calcium silicate, and the best examples of the species are found at the Kipawa Alkaline Complex in Quebec, Canada. This piece is one of the largest, richest, thickest examples of the species that we've ever had to offer. It is loaded with semi-fibrous crystals of a soft greenish-grey hue which are associated with purplish-red Eudialyte on matrix. The Agrellite crystals are slightly translucent when backlit. My favorite aspect of the piece is that the crystals are curved / bent in areas, and almost reminds me of crystals of Chrysotile I've seen with a similar shape. Under SW UV light the piece fluoresces a vivid magenta hue! A fantastic example of this incredibly hard to find classic material. From the worldwide collection of David Burgess (1951-2016) with a label from noted rare species dealer Josef Vajdak. David was a prolific species collector from Newington, Connecticut, and the namesake for the extremely rare cobalt arsenate species Burgessite, which he discovered.