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| Northwest Africa 3140 | |||||||||||||||||||||||||||||
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| Basic information | Name: Northwest Africa 3140 This is an OFFICIAL meteorite name. Abbreviation: NWA 3140 Observed fall: No Year found: 2004 Country: Morocco Mass:  750 g | ||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 649 approved meteorites classified as Ureilite. [show all] Search for other: Achondrites, Ureilites | ||||||||||||||||||||||||||||
| Writeup |
Writeup from MB online:
Northwest Africa 3140 Morocco Purchased 2004 April Achondrite (ureilite) A 750 g dense, broken, greenish-grey stone (one large and several smaller pieces) was purchased in Tagounite from a Moroccan dealer by A. and G. Hupé (xHupé) in 2004 April. Classification and mineralogy (A. Irving and S. Kuehner, UWS): Mainly olivine (core Fa22.2, CaO = 0.31 wt.%, MnO = 0.43 wt.%, Cr2O3 = 0.53 wt.%) with subordinate pigeonite (core Fs17.9Wo9.1, Cr2O3 = 1.26 wt.%, FeO/MnO = 26.2) and interstitial metal plus finely granular carbon phases (including diamond, judging from difficulties in cutting this specimen). The rims of grains of both olivine (Fa13.8, CaO = 0.35 wt.%, MnO = 0.49 wt.%, Cr2O3 = 0.43 wt.%) and pigeonite (Fs12.1Wo9.4, Cr2O3 = 1.25 wt.%, FeO/MnO = 16.4) exhibit characteristic reduced compositions against interstitial matrix. Specimens: type specimen, 20 g, and one polished thin section, UWS; main mass, xHupé. | ||||||||||||||||||||||||||||
| Data from: MB89 Table 7 Line 477: |
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| Institutions and collections |
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012) xHupé: (old address—now see GHupé or AHupé) G. and A. Hupe, 2616 Lake Youngs Court SE, Renton, WA 98058., United States (private address) |
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| Catalogs: |
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| References: | Published in Meteoritical Bulletin, no. 89, MAPS 40, A201-A263 (2005)
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| Photos: |
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Geography:
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Statistics: This is 1 of 2012 approved meteorites from Morocco (plus 35 unapproved names) (plus 1 impact crater) | ||||||||||||||||||||||||||||