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Chondrules: first occurrence in an iron meteorite.

E Olsen, E Jarosewich

    Science (New York, N.Y.)
    |November 5, 1971
    PubMed
    Summary
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    Chondrules, remnants of early solar system material, were discovered within the Netschaevo iron meteorite. This finding suggests a link between H-group and enstatite chondrites.

    Area of Science:

    • Cosmochemistry
    • Meteoritics
    • Planetary Science

    Background:

    • Iron meteorites provide insights into planetary core formation.
    • Chondrules are key components of primitive meteorites, preserving early solar system conditions.
    • The Netschaevo meteorite is an octahedrite, a common type of iron meteorite.

    Purpose of the Study:

    • To investigate the nature of silicate inclusions within the Netschaevo iron meteorite.
    • To determine the origin and classification of chondritic material found in an iron meteorite.
    • To understand the relationship between different meteorite groups.

    Main Methods:

    • Mineralogical analysis of silicate inclusions.
    • Bulk chemical composition determination.
    • Electron microprobe analysis for mineral chemistry.

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    Main Results:

    • Complete chondrules and chondrule fragments were identified within silicate inclusions.
    • The chondritic material exhibits chemical and mineralogical properties intermediate between H-group and enstatite chondrites.
    • This suggests a potential genetic link or mixing of materials from different chondrite parent bodies.

    Conclusions:

    • The Netschaevo meteorite contains a unique mixture of chondritic material.
    • This discovery challenges existing meteorite classification schemes.
    • It provides new evidence for the complex processes in the early solar system and meteorite formation.