Micro- and Nanostructures of Carbon in Pt-Low-Sulfide Ores of the Talnakh Deposit (Siberian Platform)

摘要

Finds of graphite, bitumen, and carbonaceous matter in magmatic rocks and ores of various compositions provide evidence for the participation of hydrocarbon fluids in petrogenesis and ore formation. Hydrocarbons are able to extract chemical elements and transport them as element-organic compounds and produce carbon-bearing phases and ore concentrations upon dissociation [1]. Consequently, the association of graphite and noble metals in ores is not accidental and explains the relationships between the high concentrations of platinoids and graphite and/or bitumen occurrences in "tubes" of the Nizhnii Tagil Massif [2], in dunite pipes [3, 4], and in Merenskii reef of Bushveld |5], in ores of Stillwater [6], and in deposits of the Norilsk and Dzhaltul-Khungtukunskii types [7-9]. Detailed study of graphite on the microstruc-tural level in was not carried out for these objects.