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Northwest Africa 699 | |||||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 699 This is an OFFICIAL meteorite name. Abbreviation: NWA 699 Observed fall: No Year found: 2000 Country: (Northwest Africa) Mass: 858 g | ||||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 11568 approved meteorites (plus 23 unapproved names) classified as H5. [show all] Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7) | ||||||||||||||||||||||||||||||||
Comments: | Approved 14 Feb 2014 | ||||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 103:
Northwest Africa 699 (NWA 699) (Northwest Africa) Purchased: 2000 Classification: Ordinary chondrite (H5) History: 1 stone weighing 858 g was found in Morocco in 2000. Thomas Webb acquired the sample from Michael Cottingham in a meteorite prospector in 2000. Physical characteristics: Stone has an orange patina and rounded to equant shape. The sample lacks fusion crust, but shows well developed regmaglypts. Petrography: Description and classification (A. Love, App): Sample displays recrystallized chondritic texture composed of distinct 576 μm (mean diameter) chondrules and fragments in a recrystallized matrix. Sample contains minimally weathered Fe-Ni and FeS metal occurring as discrete grains. Geochemistry: (A. Love, App) Olivine Fa18.3±0.5, n=12, low Ca pyroxene Fs17.0±0.4Wo0.7±0.2, n=12. Classification: Ordinary Chondrite (H5 S3 W2) Specimens: 29.08 g and 1 polished thin section are on deposit at App | ||||||||||||||||||||||||||||||||
Data from: MB103 Table 0 Line 0: |
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Institutions and collections |
App: Department of Geology, 572 Rivers St., Appalachian State University, Boone, NC 28608, United States (institutional address; updated 7 Mar 2013) TWebb: No contact information provided., United States (private address) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 103, MAPS 52, 1014, May 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12888/full
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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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