Computer Science
Scientific paper
Mar 1962
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1962gecoa..26..361l&link_type=abstract
Geochimica et Cosmochimica Acta, vol. 26, Issue 3, pp.361-382
Computer Science
8
Scientific paper
The nickel contents of co-existing kamacite, taenite and plessite in all major structure classes of iron meteorites have been determined by thermomagnetic analysis. The results are in substantial agreement with preliminary data available on the electron probe microanalysis of octahedrites and are consistent with the view that the metal phases in iron meteorites have formed during cooling to temperatures of 300 to 370° while the meteorites were subject to pressures up to about 25,000 atmospheres. There is some evidence that iron meteorites with relatively low nickel contents (i.e. hexahedrites and coarse octahedrites) formed at pressures slightly higher than those with higher nickel contents (i.e. fine octahedrites and nickel-rich ataxites). It is also suggested that iron meteorites with nickel contents greater than about 30 per cent (e.g. Santa Catherina) may have been composed of two -phase alloys while they still formed part of the core within a parent meteorite body.
Lovering John F.
Parry L. G.
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