Bor Pit (Boron Pit), Dal'negorsk B deposit, Dal'negorsk, Primorskiy Kray, Far-Eastern Region, Russia

12.2 x 7.5 x 4.7 cm
4.8 x 3 x 1.9 in

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Well formed Datolite crystals with a glossy luster and a light green to white color have grown on Smoky Quartz and now absent, bladed Calcite crystals. The smoky Quartz also formed on the bladed Calcite crystals. The result of this unusual paragenesis is the specimen has the appearance that a knife has cut it along its length in places. In places, both the Quartz and to a lesser extent, the Datolite, have flat surfaces which are the contact planes with the now absent Calcite. This is particularly unusual on one side of the specimen where the Quartz is present in thin, bladed crystals a bit reminiscent of Barite. A number of the Quartz crystals have a scepter habit at the termination. The color of the Quartz varies from almost white in the bladed crystals to light gray to medium smoky gray with some crystals having a darker core.

Condition: Good

Flaws: A few of the Datolite crystals are incomplete.

This mineral is also found in the following galleries: Minerals From Russia | Nesosilicates | Quartz | Pseudomorphs | Minerals Priced Between 200 and 299 Dollars