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NWA 11742 (18.75 gram)


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[ Meteoritical Bulletin Database ]


Classification: Achondrite Eucrite melt breccia S-mod/W-mod
Place/Time: 2016 in Quarzazate, Morocco
Mass: 650g

Physical characteristics: Brownish individual without fusion crust.

Petrography: The meteorite is a melt breccia composed of up to 5 mm sized basaltic clasts set into shock melted matrix. Basaltic clasts consist of exsolved pyroxenes and often lath shaped calcic plagioclase. The shock melt is mostly recrystallized to plagioclase and pyroxene; some regions show pronounced flow textures. Minor phases include silica, chromite, ilmenite and barite.

Geochemistry: low-Ca pyroxene: Fs59.9±0.9Wo4.0±1.3 (Fs57.4-61.1Wo2.2-7.6, n=14, FeO/MnO=33-37); Ca-pyroxene: Fs27.8±1.2Wo42.1±1.2 (Fs26.2-30.1Wo39.7-43.8, n=16, FeO/MnO=33-39); calcic plagioclase: An90.6±0.8 (An89.3-91.9, n=16)


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