Locality: Bor Mine, Dal’Negorsk, Primorsky Krai, Russia
Dimensions: 11.5 x 6.5 x 6 cm.
The borosilicate mineral datolite occurs as fine crystals at a number of localities around the world, including the Paterson New Jersey area, Charcas Mexico, and Dal’Negorsk Russia. Dal’Negorsk datolites, particularly from the Bor mine, are considered by many to be the world’s finest examples of this often showy and collectible species. This superb datolite specimen features lustrous, gemmy, pale green crystals to 3 cm with an unusual, possibly twinned morphology. The datolite crystals are partially-coated in places with small apophyllite crystals, making for a nice aesthetic contrast. This fine datolite was sold by Collector’s Edge Minerals in the mid-1990’s, when the production of fine specimens from the iconic Russian mining district was at it’s peak. Annette Slade photo.