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Northwest Africa 13177 | |||||||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 13177 This is an OFFICIAL meteorite name. Abbreviation: NWA 13177 Observed fall: No Year found: 2019 Country: Morocco Mass: 1247 g | ||||||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 62 approved meteorites classified as L3-6. [show all] Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3) | ||||||||||||||||||||||||||||||||||
Comments: | Approved 4 Jul 2020 | ||||||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 109:
Northwest Africa 13177 (NWA 13177) Morocco Find: 2019 Classification: Ordinary chondrite (L3-6) History: Fabien Kuntz purchased 28 stones (ranging 4.8-338 g) in Guelmin, Morocco, in 2019. Physical characteristics: Sample has an irregular ovoid shape and is dark brown in color. Chondrules and brecciated texture are visible on the surface. Petrography: Description and classification: (A. Love, App): Sample is a breccia composed of light-colored, mm-sized chondritic clasts set within dark-colored, host of unequilibrated and equilibrated chondrules and fragments. Type 4, type 6 and carbonaceous (CM-like) lithologies are present. Chondrules within host are poorly equilibrated and have an average apparent diameter of 523µm (n=56). Additional minerals are albitic plagioclase, chromite, phosphate, FeNi metal and troilite. Geochemistry: (A.Love, App) Host: Olivine (Fa22.67±3.4, (Fa15.64-27.19), Fe/Mn=46.8±3.5 n=11); low Ca pyroxene (Fs14.8±7.0Wo 1.4±2.0 (Fs6.9-22.9Wo0.1-4.9), n=5); Equilibrated clasts: Olivine (Fa24.7±0.7, Fe/Mn=47.8±4.4, n=7); low Ca pyroxene (Type 4 Fs18.1±7.2Wo2.7±4.4, n=5; Type 6 Fs21.4±0.6Wo1.7±0.2, n=5) Xenolithic clast: Olivine (Fa2.8±2.2, Fe/Mn=16.2±16.4, n=3); low Ca-pyroxene (Fs2.7Wo2.0, n=1). Classification: Ordinary chondrite (L3-6 xenolithic breccia, C-S3, W1). Based on the textures, mineral compositions, magnetic susceptibility and chondrule diameters, this is an L3-6 chondrite breccia. The xenolith has textures and compositions similar to CM2 carbonaceous chondrites. Specimens: The main masses are held by Fabien Kuntz. An endcut and slice weighing 28.75 g and a polished thin section are on deposit at App. | ||||||||||||||||||||||||||||||||||
Data from: MB109 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) Kuntz: Fabien Kuntz, France; Website (private address) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 109, in preparation (2020)
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Photos: |
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Geography: |
Statistics: This is 1 of 2068 approved meteorites from Morocco (plus 31 unapproved names) (plus 1 impact crater) | ||||||||||||||||||||||||||||||||||
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Revision history: |
This lists important revisions made to data for this record.
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