Finding of Refractory Inclusions in the North Kolchim Meteorite (H3)

Abstract

For the first time among Russian meteorites, refractory forsterite-rich inclusions are determined in the North Kolchim meteorite (H3). Forsterite-rich inclusions are found mainly in carbonaceous chondrites; they are extremely rare in ordinary chondrites. These inclusions are considered by most researchers as one of the earliest formations in the Solar System. The inclusions of the North Kolchim meteorite are composed of high-magnesia forsterite (FeO 0.4–2%), which contains higher CaO (0.5–1%) and Al2O3 contents (up to 0.4%) and is depleted in MnO. In some places, forsterite is found in intergrowths with high-magnesia enstatite (FeO of 0.5–2.5%) also containing CaO impurities of up to 0.5%, Al2O3 of up to 1.5%, and MnO below the detection limits. A characteristic feature of forsterite-rich inclusions is that, unlike chondrules, they are mostly represented by acute-angled fragments, and that is probably due to their relatively frequent collisions.

This is a preview of subscription content, access via your institution.

Fig. 1.

REFERENCES

  1. 1

    V. N. Loginov, Ural Meteorites (Ural State Mining Univ., Yekaterinburg, 2004) [in Russian].

    Google Scholar 

  2. 2

    R. H. Jones, Meteorit. Planet. Sci. 47 (7), 1176–1190 (2012).

    Article  Google Scholar 

  3. 3

    F. Wlotzka, Meteoritics 28 (3), 460–460 (1993).

    Google Scholar 

  4. 4

    I. M. Steele, Geochim. Cosmochim. Acta 50, 1379–1395 (1986).

    Article  Google Scholar 

  5. 5

    I. M. Steele, Geochim. Cosmochim. Acta 53, 2069–2079 (1989).

    Article  Google Scholar 

  6. 6

    E. R. D. Scott and A. N. Krot, Treatise on Geochemistry, Vol. 1: Meteorites and Cosmo-Chemical Processes (Elsevier, 2014), pp. 65–137.

  7. 7

    A. Pack, H. Palme, and J. M. G. Shelley, Geochim. Cosmochim. Acta 69, 3159–3182 (2005).

    Article  Google Scholar 

  8. 8

    A. Pack, H. Yurimoto, and H. Palme, Geochim. Cosmochim. Acta 68, 1135–1157 (2004).

    Article  Google Scholar 

Download references

ACKNOWLEDGMENTS

The authors are grateful to A.V. Mikheeva, S.V. Lepekha, and L.V. Leonova, analysts of the laboratory for physical-chemical studies of the Zavaritsky Institute of Geology and Geochemistry, Ural Branch, Russian Academy of Sciences.

Funding

This work was supported by the Russian Foundation for Basic Research, project no. 17–05–00297.

Author information

Affiliations

Authors

Corresponding author

Correspondence to S. V. Berzin.

Additional information

Translated by N. Astafiev

Rights and permissions

Reprints and Permissions

About this article

Verify currency and authenticity via CrossMark

Cite this article

Berzin, S.V., Ivanov, K.S. & Burlakov, E.V. Finding of Refractory Inclusions in the North Kolchim Meteorite (H3). Dokl. Earth Sc. 487, 908–910 (2019). https://doi.org/10.1134/S1028334X19080245

Download citation