The Mg/Fe ratio of silicate minerals in the meteoritic materials and in the circumstellar environment: A case study for the chondritic-like composition

Open Astronomy

卷:30

Futó Péter¹  Csámer Árpád²  Nagy Mihály³  Kertész Zsófia⁴  Döncző Boglárka⁴  Novák Richárd⁵  Vanyó József⁶  Sztakovics János⁶  Gucsik Arnold⁶  Simonia Irakli⁷ 

[1] Cosmochemistry Research Group, Department of Mineral-ogy and Geology, Institute for Earth Sciences, University of Debrecen, H-4032, Egyetem tér, 1Debrecen, Hungary;

[2] Cosmochemistry Research Group, Department of Mineralogy and Geology, Institute for Earth Sciences, University of Debrecen, H-4032, Egyetem tér 1Debrecen, Hungary;

[3] Debrecen Reformed College, H-4026, Debrecen, Kálvin tér 16., Hungary;

[4] Institute for Nuclear Research (ATOMKI), H-4026, Debrecen, Bem tér 18/c, Hungary;

[5] National Park of Bukk Mts, H-3304, Eger, Sánc utca 6., Hungary;

[6] Research Group in Planetology and Geodesy, Department of Physics, Eszterházy Károly Catholic University, H-3300 Eger, Eszterházy tér 1., Hungary;

[7] The School of Natural Sciences and Engineering of Ilia State University, Tbilisi, 0162, Georgia;

关键词: meteorites;    circumstellar environment;    planet;    mineral;    astrophysics;   

DOI  :  10.1515/astro-2021-0006

来源: DOAJ

【 摘 要 】

Kaba meteorite as a reference material (one of a least metamorphosed and most primitive carbonaceous chondrites fell on Earth) was chosen for this study providing an adequate background for study of the protoplanetary disk or even the crystallization processes of the Early Solar System. Its olivine minerals (forsterite and fayalite) and their Mg/Fe ratio can help us to understand more about the planet formation mechanism and whether or not the metallic constitutes of the disk could be precursors for the type of planets in the Solar System. A multiple methodological approach such as a combination of the scanning electron microscope, optical microscope, Raman spectroscopy and electron microprobe of the olivine grains give the Fe/Mg ratio database. The analyses above confirmed that planet formation in the protoplanetary disk is driven by the mineralogical precursors of the crystallization process. On the other hand, four nebulae mentioned in this study provide the astronomical data confirming that the planet formation in the protoplanetary disk is dominated or even driven by the metallic constituents.

【 授权许可】

Unknown