Geological and Petrographic Characteristics of Kimberlite Pipes

N. N. Zinchuk

Abstract


Studies of the geological structure and petrochemical composition of the Siberian Platform kimberlites indicated complexity, diversity of geological, tectonic, and paleogeographic situations, which must be considered for proper prospecting-exploration for diamonds in each area of investigation. Information about petrochemical composition of potential diatremes, hosting, and overlying sedimentary and magmatic formations is an important prerequisite for prospecting of kimberlite deposits in different geologic-tectonic conditions. The most attention should be paid to typomorphic specific features of primary and secondary minerals of diatremes. Each diamondiferous region is characterized by a certain set of typomorphic associations of kimberlites primary and secondary minerals. The diamonds with ultrabasic association of solid phase inclusions (olivine, chrome-spinel, pyrope, etc.) dominate in majority of kimberlite pipes.

Keywords


kimberlites; pipes; Siberian Platform; diamondiferous region; typomorphism of minerals; diamonds

References


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DOI: http://dx.doi.org/10.17072/psu.geol.33.70

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