Letter | Published:

‘Impact Contamination’ of the Mokoia Carbonaceous Chondrite

Nature volume 204, page 567 (07 November 1964) | Download Citation

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Abstract

IN the course of inspection of a specimen of the stone from New Zealand, in the Museum of Paris, a rather unusual yellow chondrule-like grain, 1.7 mm in diameter, was detected on what appeared to be fresh fractured surface, some 23 mm from the nearest visible crust on the specimen. On closer examination the grain proved to consist of resinous material soluble in ether, and with volatiles of 92.7 per cent; 4.1 per cent fixed carbon and 3.2 per cent ash. The terrestrial origin of this blob of resin is supported by the ample fragments of wood, spores, Radiolaria, and other typical micro-fossils.

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References

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    , Geochim. Cosmochim. Acta, 4, 1 (1953).

  2. 2.

    , and , Nature, 193, 1126 (1962).

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    (personal communication).

  4. 4.

    , and , Nature, 202, 125 (1964).

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Author information

Author notes

    • G. MUELLER

    Nuffield Visiting Professor, Birkbeck College, University of London.

Affiliations

  1. University of Concepcion, Chile.

    • G. MUELLER

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DOI

https://doi.org/10.1038/204567a0

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