Physics
Scientific paper
Nov 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984lpsc...15..289h&link_type=abstract
(Lunar and Planetary Institute, NASA, American Geophysical Union, et al., Lunar and Planetary Science Conference, 15th, Houston,
Physics
5
Igneous Rocks, Impact Melts, Iron Meteorites, Meteoritic Composition, Siderites, Crystallization, Meteoritic Microstructures, Olivine, Petrography, Pyroxenes, Silicates, Meteorites, Stony Iron Meteorites, Mesosiderites, Melts, Matrix, Mincy, Plagioclase, Bondoc, Budulan, Texture, Comparisons, Description, Mineralogy, Classification, Formation, Crystallization, Pinnaroo, Samples, Meteorite, Plagioclase, Pyroxene, Heterogeniety
Scientific paper
Reasons are given for reclassifying former 'poikiloblastic' mesosiderites as 'poikilitic' in order to better represent their thermal histories. Attention is focused on the plagioclase-POIK mesosiderites Bondoc, Budulan, and Mincy, which all display silicate melt matrices similar to the Palisades sill and Apollo 17 mare basalts. The poikilitic textures, resorbed olivine grains, and the crystallization sequence are sufficient to reclassify the three specimens from 3B to 4B mesosiderites. Because the 4B mesosiderites are clast-laden melt rocks, their origins were probably in impact melts, which would have combined hot melts with cold clasts.
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