Genesis of noble metal mineralization (Ag, Au, PGE) on the example of pechenga structure (Kola peninsula)

Abstract

The problem of the genesis of noble metal (Ag, Au, PGE) mineralization in the Norther Pechenga zone is discussed, where these ores are associated with the classical Cu-Ni deposits of Pechenga Ore Field. This mineralization is based on three main factors: subalkaline magmatism under conditions of compression, feeding of platform depressions with carbonaceous matter and basalt-silica splitting of magmas under conditions of liquid immiscibility. Considered geochemical aspects of this process. Briefly characterized vein deposits of noble metals in the Souther Pechenga zone. The purpose of the article. The purpose of the article is to draw the attention of geologists to a possibly wide range of deposits of noble metals and diamonds, the genesis of which is associated with basalt-silica splitting under conditions of liquid immiscibility. Eruptive breccias of such deposits are often described by geologists as terrigenous rocks and conglomerates.