Martian Meteorite Achondrite (Howardite) w/Fresh Fusion Crust 5.16 Kilo

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Martian Meteorite Achondrite (Howardite) w/Fresh Fusion Crust 5.16 Kilo:
$31000.00

5.160 Kilogram- largeExterior surfaces partly covered by black fusion crust; non-crusted surfaces show obvious breccia texture with variegated clasts up 1o 1 cm across. Most surfaces appear relatively unweathered However, rust spots are present.Petrography:In thin section appears to be a roughly 50-50 mixture of diogenitic (coarse orthopyroxene) and eucritic (plagioclase, pyroxene-dominated) clasts. Some eucritic pyroxene shows zoning.Geochemistry:Diogenitic orthopyroxene Fs27.1±3.8Wo2.4±1.0(N=182), eucritic low-Ca pyroxene Fs41.6±6.0Wo3.1±1.0(N=40), augite Fs26.8±7.8Wo41.5±2.5(N=30), uninverted pigeonite Fs48.8±5.8Wo8.0±2.3(N=36), bulk inverted pigeonite is a type of achondrite and a member of the HED group of meteorites believed to have originated on the large main-belt asteroid 4 Vesta. Howardites are named after the English chemist Edward Howard (1774–1816).