Martian Meteorite 1.01g I Mars SHERGOTTITE - NWA 11668
On Offer: 1.01g Martian Meteorite fragment.
| Northwest Africa 11668 | |||||||||||||||||||||||||
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| Basic information |
Name: Northwest Africa 11668 This is an OFFICIAL meteorite name. Abbreviation: NWA 11668 Observed fall: No Year found: 2018 Country: (Northwest Africa) Mass:  20 g |
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| Classification history: |
This is 1 of 174 approved meteorites (plus 1 unapproved name) classified as Martian (shergottite). [show all] Search for other: Martian meteorites |
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| Comments: | Approved 27 Mar 2018 | ||||||||||||||||||||||||
| Writeup |
Writeup from MB 107:
Northwest Africa 11668 (NWA 11668) (Northwest Africa) Purchased: 2018 Classification: Martian meteorite (Shergottite) History: The meteorite was purchased in Tindouf, Algeria, from a Sahrawi dealer. Physical characteristics: Four dark-green pieces partly covered with fusion crust. Petrography: The meteorite is a medium grained basalt predominantly composed of up to 1.5 mm sized pyroxene and plagioclase grains. Pyroxene is intensely fractured pigeonite and augite displaying mottled compositional zoning. Plagioclase is completely transformed into compositionally homogeneous maskelynite. Minor phases are ilmenite, ulvöspinel, pyrrhotite and some Si-rich mesostasis. Geochemistry: pigeonite: Fs53.7±4.4Wo14.3±2.4 (Fs35.5-59.6Wo9.7-20.0, n=38, FeO/MnO=33-43); augite: Fs26.2±7.0Wo32.2±3.9 (Fs21.1-48.9Wo20.6-37.8, n=32, FeO/MnO=27-40); feldspar: An56.8Ab42.0Or1.2, n=15 Classification: Martian (basaltic shergottite) |
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| Data from: MB107 Table 0 Line 0: |
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