Allan Hills 77005 - A new meteorite type found in Antarctica

Details Allan Hills 77005 - A new meteorite type found in Antarctica Allan Hills 77005 - A new meteorite type found in Antarctica

Jun 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979sci...204.1201m&link_type=abstract

Science, vol. 204, June 15, 1979, p. 1201-1203.

Other

25

Achondrites, Antarctic Regions, Meteoritic Composition, Abundance, Chromites, Electron Probes, Igneous Rocks, Meteorites, Mineralogy, Olivine, Petrography, Recovery, Spinel, Allan Hills Meteorite, Meteorites, Samples, Achondrites, Shergottite Meteorites, Olivines, Origin, Composition, Mineralogy, Igneous Rocks, Spinel, Melting, Shock Metamorphism

Scientific paper

A unique 482.5 g meteorite found in Antarctica appears to be related by igneous differentiation to shergottite achondrites, which have close similarities with terrestrial basaltic rocks. Zoned maskelynite with similar compositional ranges and plagioclase of such intermediate compositions as are unknown in other achondrites occur in both shergottites and the Allan Hills meteorite. The degree of silica saturation, however, strongly distinguishes the two meteorite types. It is suggested that the Allan Hills meteorite may represent a cumulate rock formed earlier than the shergottites from the same or a similar parent magma.

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