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Northwest Africa 6677 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 6677 This is an OFFICIAL meteorite name. Abbreviation: NWA 6677 Observed fall: No Year found: 2010 Country: (Northwest Africa) Mass: 5.2 kg | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 12 approved meteorites classified as L4-melt breccia. [show all] Search for other: L chondrites, L chondrites (type 4-7), Melted chondrites, Ordinary chondrites, and Ordinary chondrites (type 4-7) | ||||||||||||||||||||||||||||||
Comments: | Approved 16 Dec 2011 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 100:
Northwest Africa 6677 (NWA 6677) (Northwest Africa) Purchased: 2010 Classification: L4-melt breccia History: Purchased by Giorgio Tomelleri at the Erfoud market, Morocco. Physical characteristics: A single dark brown 5200 g stone without fusion crust. Petrography: (V. Moggi Cecchi, G. Pratesi, S. Caporali, MSP): The thin section displays a brecciated texture with two lithologies: chondritic and melted. The chondritic portion shows an equilibrated texture consisting of rare chondrules (to 0.7 mm), embedded in a fine-grained recrystallized matrix dominated by olivine, plagioclase and orthopyroxene. Opaque phases are represented by rare metal and troilite grains. The melted portion shows diffuse melt features such as metal veins, micrometer-sized metal grains and glass. Geochemistry: Olivine (Fa23.8-27.5), orthopyroxene (Fs20.8En77.2Wo2.0, Mg/(Mg+Fe)=0.68). Classification: Ordinary chondrite (L4-melt breccia); S2, W1. Specimens: A total of 20.5 g of sample, one polished thin section and a block are on deposit at MSP (MSP 5143). | ||||||||||||||||||||||||||||||
Data from: MB100 Table 1 Line 1473: |
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Institutions and collections |
MSP: Museo di Scienze Planetarie, Via Galcianese 20/H, 59100 Prato, Italy, Italy; Website (institutional address; updated 22 Oct 2022) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 100, MAPS 49, E1-E101 (2014)
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Photos: |
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Geography: |
Statistics: This is 1 of 9589 approved meteorites from (Northwest Africa) (plus 1869 unapproved names) | ||||||||||||||||||||||||||||||
Also see: |
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Revision history: |
This lists important revisions made to data for this record.
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