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Tabbita: An L6c chondrite from New South Wales, Australia
Author(s) -
Bevan A. W. R.,
Griffin B.,
Pogson R. E.,
Sutherland F. L.
Publication year - 1992
Publication title -
meteoritics
Language(s) - English
Resource type - Journals
eISSN - 1945-5100
pISSN - 0026-1114
DOI - 10.1111/j.1945-5100.1992.tb01061.x
Subject(s) - chondrite , meteorite , plagioclase , geology , geochemistry , silicate , olivine , feldspar , mineralogy , shock metamorphism , chondrule , achondrite , astrobiology , chemistry , paleontology , physics , quartz , organic chemistry
— A crusted stone weighing 3.10 kg was found in 1983 near Tabbita in south central New South Wales ( ca. 34°03′S, 145°50′E), Australia. Compositions of the ferro‐magnesian silicates (olivine Fa 24.6 ; orthopyroxene Fs 20.9 ) show that the meteorite belongs to the L‐group of chondrites. Uniformity of silicate compositions and the presence of abundant crystalline plagioclase feldspar (An 10.8 Ab 81.7 Or 7.5 ) show that the meteorite belongs to petrologic type 6. Silicates that display undulose extinction, and the absence of any thermal effects induced by shock indicate that Tabbita is shock facies c. Tabbita is distinct from several other L6 chondrites found in the same general area.