Shock effects include undulatory extinction in pyroxene and shock melt veins and pockets. The section consists of a coarse-grained unbrecciated basalt with elongate pyroxene (up to 0.5 mm) and plagioclase laths (up to 1 mm) (~60:40 px:plag), rare phenocrysts of olivine (up to 1 mm) and interstitial oxides and late-stage mesostasis. Thin Section (,2) Description: Tim McCoy, Linda Welzenbach. This sample is paired with the LAP samples from the ’02 season. The interior is pinkish-tan with white linear minerals and glass veins. ~75% of the exterior has shiny black fusion crust. Macroscopic Description: Kathleen McBride. 89įrom Antarctic Meteorite Newsletter, vol. These are almost certainly paired with LAP 0220. The meteorites are lunar olivine-bearing basalt. The Fe/Mn ratio in the pyroxenes averages ~60. Microprobe analyses reveal pigeonite to augite of Fs 20-80Wo 10-36, plagioclase is An 85-90Or 0-1 and a single olivine phenocryst is Fa 35. These sections consist of a coarse-grained unbrecciated basalt with elongate pyroxene (up to 0.5 mm) and plagioclase laths (up to 1 mm) (~60:40 px:plag), rare phenocrysts of olivine (up to 1 mm) and interstitial oxides and late-stage mesostasis. Thin Section (,4, ,6, and ,4) Description: Tim McCoy, Linda Welzenbach. There are criss-crossing fractures that are filled with black glass. The interior has a granular texture with interconnected linear mineral grains, black, white and brown in color. 50-90% of these lunar meteorite exteriors are covered with shiny, black, striated fusion crust. This is consistent with a lunar basalt.įrom Antarctic Meteorite Newsletter, vol. Oxygen Isotope Analysis: T.K. Mayeda and R.N. The meteorite is a lunar olivine-bearing basalt. Microprobe analyses reveal pigeonite to augite of Fs 26-80Wo 14-36, plagioclase is An 85-90Or 0-1 and a single olivine phenocryst is Fa 50. The section consists of coarse-grained unbrecciated basalt with elongate pyroxene (up to 0.5 mm) and plagioclase laths (up to 1 mm) (~60:40 px:plag), rare phenocrysts of olivine (up to 1 mm) and interstitial oxides and late-stage mesostasis. Thin Section (,6) Description: Tim McCoy, Linda Welzenbach. There are numerous criss-crossing fractures filled with black glass. The interior consists of interlocking tan and white coarse-grained minerals. The fusion crust exhibits a slight ropy texture with polygonal fractures. Small areas of material have been plucked out. 95% of the exterior surface has black fusion crust. Location: LaPaz Ice Field, Transantarctic Mountains, Antarctica 88įrom Antarctic Meteorite Newsletter, vol. Photo credit: NASA/JSC Lab sample of LAP 04841. Photo credit: NASA/JSCįour views of LAP 04632 Photo credit: NASA/JSC Photo credit: NASA/JSC Inside of LAP 02205. Photo credit: NASA/JSC Note the dark fusion crust, unlike those on feldspathic lunar meteorites. References LAP 02205 in the field in Antarctica. Photo credit: NASA/JSC Four sides of LAP 02205.
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