COMPOSITION OF ORE-BEARING FLUIDS IN THE DAL'NEGORSK BOROSILICATE DEPOSIT, RUSSIA

Abstract

The Dal’negorsk borosilicate deposit in Primorye is the typical economic-grade calcic-skarn boron deposit [1, 2]. The large-scale mineralization is restricted to the skarnized limestones of the Upper Triassic Tetyukha Formation. The skarn zone is 3.5 km long and 500 m thick. One can distinguish the skarn (wollastonite, hedenbergite, and andradite), borosilicate (danburite, axinite, datolite, and quartz), and quartz–carbonate (quartz, calcite, apophyllite, and fluorite) stages of mineralization [1].