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Formation features of a metal-silicate and carbon-bearing material in a preplanetary period of the Solar system development

ABSTRACT

Report on the SRW: 120 p., 27 figures, 12 tables, 129 sources

The objects of research are meteorites.

The results of structural-mineralogical and chemical studies of a carbon-bearing material and rare shock-melted areas of chondrites, filiform mineral crystals, and terrestrial weathering products in different types of meteorites are given. For the first time, large bitumen inclusions in chondrites, as an important indicator of pre-accretional nature of organic material in the parent bodies, were revealed and studied by mean of electron microscope instead of chemical extraction. An important conclusion about the migration nature of the bitumen, probably due to impact processes during prolonged evolution of primary organic compounds in the parent bodies was infered. A detailed study of structural and mineralogical characteristics and redistribution features of chemical elements between silicates, metal and troilite in chondrites in result of their complete shock melting in situ allowed to clear up the PT-parameters of a shick metamorphism in a postaglomeration period and its effect on the primary mineral characteristics. It is shown that the filiform mineral crystals in chondrites, iron and iron-stone meteorites have different nature and are thin indicators of early physical-chemical processes in the Space.

Authors:

Semenenko Vira Panteleivna

Girich Aelita Leonidivna

Rozko Alla Mykolayivna

Kychan Nataliya Volodymyrivna

Shkurenko Kyrylo Oleksandrovych

Shirinbekova Svitlana Nurakhmedivna

Other authors:

Yaskevich T.B.

Vlasenko V.I.

Gorovenko T.M.

Koromyslichenko T.I.

Kyrylyuk M.N.

Slivinskyi V.M.

Yanchenko V.P.

Keywords:

meteorites, chondrites, organic matter, bitumen, Fe, Ni metal, silicates, impact melting, filamentrous crystals, weathering

Head of the research:

Semenenko Vira Panteleivna

Registration Card (RC):

Execution period of the research:

2022 - 2022