Camel Donga - A eucrite with high metal content

Details Camel Donga - A eucrite with high metal content Camel Donga - A eucrite with high metal content

Mar 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988metic..23...49p&link_type=abstract

Meteoritics (ISSN 0026-1114), vol. 23, March 1988, p. 49-57.

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Chemical Composition, Grain Size, Metal Compounds, Meteoritic Composition, Mineralogy, Rare Gases, Australia, Basalt, Igneous Rocks, Pyroxenes, Meteorites, Camel Donga, Eucrites, Metal, Composition, Chemistry, Iron, Mineralogy, Rare Gases, Comparisons, Origin, Formation, Lithology, Inaa, Reduction, Homogeneity, Distribution, Sulfides, Heating, Procedure, Sem, Laboratory Studies, Samples, Meteorite, Petrography, Photomicrographs, Refractory Material, Lithophiles, Sulfur, Electron Microscopy, Johnstown, Neutr

Scientific paper

The Camel Donga eucrite is unique since it contains about 2 percent metallic iron. Chemical composition, mineralogy, and noble-gas contents of Camel Donga are, however, indistinguishable from other eucrites. The bulk iron content and the composition of the metal show that the camel Donga metal was formed by reduction of FeO and FeS, probably through loss of S2 and SO2. Since coarse- and fine-grained lithologies are affected, it is likely that the reduction occurred after brecciation. The inhomogeneous distribution of metal suggests that reduction is limited to areas where sulfides were present. The fact that major parts of the meteorite still contain sulfides, in many cases associated with metal, indicates that the reduction process did not go to completion. A comparatively short heating period is suggested, perhaps in an ejecta blanket.

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