Издатель: Издательский дом СВФУ , Место издания: Якутск , Год издания: 2020

In the north of Siberia, east of the Anabar shield, several massifs of alkaline rocks with carbonatites are known, including Tomtor and Bogdo complex, which form a large alkaline-carbonatite province. The alkaline rocks of the Bogdo intrusive correspond to the group of feldspathic rocks of the main composition. The distribution of Au and Ag in them were studied. The maximum dispersion and contents of Au and Ag were determined in rischorrites and pseudolithic syenites (average - 42.5 - 44.0 ppb Au; 28-38 ppb Ag). The gold composition corresponds to Au_0.91Ag_0.09 - Au_0.78Ag_0.22. Feldspars (albite, anorthoclase) were found in inclusions in gold from rischorrite.