Genesis of Magnetite-Apatite and Phlogopite Deposits in the Kovdor Massif, Kola Peninsula: Evidence from Melt and Fluid Inclusions

摘要

Problems associated with the genesis of apatite-magnetite and phlogopite ores that are related to car-bonatite-alkaline-ultramafic magmatic massifs are controversial. For example, the Kovdor Massif and deposits therein are often considered to be "objects evolving from ore-phosphate-carbonate magmas of the intermediate chambers..." with the subsequent emplacement of magmas characterized by cyclic compositional variation, or they are considered to be objects derived from independent magmatic phase. These concepts are confirmed by the melt inclusions in apatite and forsterite of ores and carbonatites [3 and others].