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Northwest Africa 14729 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 14729 This is an OFFICIAL meteorite name. Abbreviation: NWA 14729 Observed fall: No Year found: 2021 Country: (Northwest Africa) Mass: 2.3 kg | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 28 approved meteorites classified as Lunar (melt breccia). [show all] Search for other: Lunar meteorites | ||||||||||||||||||||||||||||||
Comments: | Approved 19 Mar 2022 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 111:
Northwest Africa 14729 (NWA 14729) (Northwest Africa) Purchased: 2021 Classification: Lunar meteorite (melt breccia) History: Purchased from a Moroccan meteorite dealer in 2021. Physical characteristics: Single stone, dark green-brown, sandblasted exterior. Sawcut surfaces reveal this meteorite to be a breccia with fragments of fine-grained light colored host rock set darker vesicular melt-rock matrix. Petrography: (C. Agee, UNM) Electron microprobe analysis and reflected microscopy of a polished mount show this meteorite to be a polymict lunar melt breccia with an anorthositic troctolite host rock consisting of fine-grained olivine and lesser amounts of pyroxene poikilitically enclosed in plagioclase. The matrix consists of vesicular melt rock. and very fine-grained minerals and rock clasts. Trace amounts of chromite, ilmenite, troilite, and Fe-metal (low Ni) were detected. Geochemistry: (A. Ross, UNM) Olivine Fa25.4±5.3, Fe/Mn=102±18, n=10; pigeonite Fs16.4±3.6Wo4.5±1.5, Fe/Mn=54±5, n=7; subcalcic augite Fs16.1±5.1Wo30.1±7.7, Fe/Mn=50±2, n=3; plagioclase An96.0±1.7, n=6. Classification: Lunar (polymict anorthositic troctolite melt breccia), nomenclature based on Stoeffler et al. (1980). The Mg# of olivine and An-content of plagioclase of this meteorite are consistent with that of the Apollo Lunar Mg-suite (Warren, 1993). Specimens: 27.6 g on deposit at UNM, Craig Zlimen and Mark Lyon hold the main mass. | ||||||||||||||||||||||||||||||
Bibliography: |
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Data from: MB111 Table 0 Line 0: |
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Institutions and collections |
UNM: Institute of Meteoritics
MSC03 2050
University of New Mexico
Albuquerque NM 87131-1126
USA, United States; Website (institutional address; updated 12 Feb 2015) |
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Catalogs: |
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References: | Published in Gattacceca J., McCubbin F. M., Grossman J. N., Schrader D. L., Chabot N. L., D’Orazio M., Goodrich C., Greshake A., Gross J., Joy K. H., Komatsu M. and Miao B. (2023) The Meteoritical Bulletin, No. 111. Meteoritics & Planetary Science 58, 901–904. ?
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Geography: |
Statistics: This is 1 of 9710 approved meteorites from (Northwest Africa) (plus 1853 unapproved names) | ||||||||||||||||||||||||||||||
Also see: |
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Revision history: |
This lists important revisions made to data for this record.
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