Fluorite with Quartz

specimen number:
2312018

location:
Second Soviet Mine, Dal'negorsk, Primorskiy Kray, Russia

description:
Classic material from the 1990s, light green slightly translucent non-lustrous crystals of fluorite to 2.5 cm in size across both sides of this matrix that is mostly coated with micro crystalline quartz. In good condition.

The Dalnegorsk mining district, located in the Primorsky Krai region of the Russian Far East, is defined by complex skarn and boron-rich hydrothermal deposits hosted within Triassic limestone sequences. Formed through the intrusion of Late Cretaceous granodiorites and granites into carbonate and sedimentary rocks, the local geology experienced extensive metasomatic activity that replaced limestone with calc-silicate skarns and created large open cavities. Commercial mining in the area began in the late nineteenth century, initially focusing on polymetallic sulfide ores containing lead and zinc, alongside later large-scale extraction of borosilicate ores like datolite. The district has long been recognized for producing exceptional crystal specimens, including excellent calcite, ilvaite, pyrrhotite, galena, sphalerite, and danburite, recovered from the extensive underground workings and open pits.

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