Letter | Published:

‘Impact Contamination’ of the Mokoia Carbonaceous Chondrite

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



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.

Access optionsAccess options

Rent or Buy article

Get time limited or full article access on ReadCube.


All prices are NET prices.


  1. 1.

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

  2. 2.

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

  3. 3.

    (personal communication).

  4. 4.

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

Download references

Author information

Author notes

    • G. MUELLER

    Nuffield Visiting Professor, Birkbeck College, University of London.


  1. University of Concepcion, Chile.

    • G. MUELLER


  1. Search for G. MUELLER in:

About this article

Publication history




Further reading


By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.