Datolite, Dalnegorsk, Primorsky Krai, Russia

The mines at Dalnegorsk have yielded many impressive minerals with some people electing to focus solely on collecting this locality. Among the attractive minerals from this famous Russian deposit is datolite, a rare calcium borosilicate. This mineral can come in many forms, like reddish-coloured nodules from Michigan to green, lustrous crystals like this one. This is a hefty specimen too, weighing in at about 1 kg. The crystals are large and complete with no damage, though show internal fracturing. For those who like to study crystals, and enjoy cabinet-sized specimens, this would make a good acquisition. Ex Garry Kolodinsky collection. From: Dalnegorsk, Primorsky Krai, Russia. Dimensions: 7.5 cm x 8.5 x 13 cm