Villiaumite with Thermonatrite, Chkalovite

specimen number:
2133188

location:
Khibiny Massif, Kola Peninsula, Russia

description:
Rich purple cleavages of villiaumite with thermonatrite and chkalovite. Good example for all species. Specimen comes with a previous collection data card from Jack Nieburger.

The Khibiny Massif, located on the Kola Peninsula in Russia, is the largest alkaline intrusive complex in the world and a site of immense mineralogical diversity. Geologically, it is a massive ring-shaped pluton formed during the Devonian period, consisting of rare alkaline rocks like nepheline syenites and foidolites. The massif is famous for its hyper-agpaitic geochemistry, which allowed for the formation of exotic minerals such as villiaumite (sodium fluoride). Villiaumite typically occurs as deep carmine-red or pinkish-red grains and crystals within pegmatitic veins and pockets, prized by collectors for its rare color and solubility in water. Historically, the geological significance of the region was first realized during expeditions led by Wilhelm Ramsay in the late 19th century and later by Alexander Fersman in the 1920s. Industrial mining began in 1929 with the establishment of the town of Kirovsk and the development of massive apatite-nepheline deposits used for phosphate fertilizer. These mining operations have remained continuous for nearly a century and continue today, making the Khibiny Massif a critical economic resource and a premier global locality for rare mineral species.

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