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Anastasiya I. Kolyadina
Anastasiya I. Kolyadina
Associate Professor, Ph.D.
Empress Catherine II Saint Petersburg Mining University
Associate Professor, Ph.D.
Empress Catherine II Saint Petersburg Mining University

Articles

Thematic volume: Processes in the depths of the Earth
  • Date submitted
    2024-05-03
  • Date accepted
    2024-10-02
  • Date published
    2024-10-31

Genetic geological model of diamond-bearing fluid magmatic system

Article preview

The article proposes a genetic geological model of diamond deposit formation associated with kimberlites and lamproites. It is based on the synthesis of published data on diamond-bearing kimberlite systems and an original study of the ontogenetic features of diamond crystals. Deep diamond crystallization, its upward transportation and subsequent concentration in near-surface kimberlite-lamproite bodies and other rocks, including those brought to the surface by high-amplitude uplifts of crystalline basement rocks, are combined in a single system. An assumption is made about the primary sources of the Anabar placer diamonds. The possibility of hydrocarbon generation at mantle levels corresponding to diamond formation areas and their transportation to the upper crustal zones by a mechanism similar to the mantle-crust migration of diamond-bearing fluidized magmas is shown. The high rate of their upward movement allows transportation to the surface without significant loss as a result of dissolution in melts and sorption on the surface of mineral phases. The significant role of fluid dynamics at all stages of this system is noted.

How to cite: Kozlov A.V., Vasilev E.A., Ivanov A.S., Bushuev Y.Y., Kolyadina A.I. Genetic geological model of diamond-bearing fluid magmatic system // Journal of Mining Institute. 2024. Vol. 269. p. 708-720. EDN CFZLAK