Fluorite properties and Formation Conditions at the beryllium-Fluorite Deposits in the Voznesensk Ore District (Far East Region)

摘要

The article discusses the formation and properties of fluorite in the Voznesensk and Pogranichnyi deposits (the Voznesensk ore district, Far East region, Russia). Evolution of the postmagmatic process was mainly influenced by an intense apocarbonate metasomatosis, which caused the decrease in the F acidity and activity, an increase in the alkalinity and oxidaizing otential of fluids, and an inheritance of REE distribution patterns of limestones at terminal stages of ore formation. Fluorite, the most abundant ore mineral, was accumulated under different conditions and at all successive megastages of the postmagmatic process: early and late albitite, greisen, and late hydrothermal.