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Re: Fwd: Question about irons
Steve Schoner wrote:
> I have heard estimates that [Hoba] may
>have fallen at least 500,000 years ago.
Hello Steve, Rob and List,
There is an interesting article in Meteoritics 30-4, 1995
about the Hoba meteorite with a reference to the terrestrial age:
GOLDEN D.C. et al. (1995) Chemistry and mineralogy of oxidation
products on the surface of the Hoba nickel-iron meteorite (Meteoritics
30-4,1995, 418-422):
Hoba is believed to have fallen about or before 8 0 , 0 0 0 years ago
(McCorkell et al., 1968) in what is now Namibia. The terrestrial age
was estimated from the 59Ni, a spallation product nuclide.
And another reference that might be useful:
BUDDHUE J.D. (1957) The Oxidation and Weathering of Meteorites
(Univ. New Mexico Press, Albuquerque, New Mexico. 162 pp.).
Best regards,
Bernd
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