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Northwest Africa 11595 | |||||||||||||||||||||
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Basic information | Name: Northwest Africa 11595 This is an OFFICIAL meteorite name. Abbreviation: NWA 11595 Observed fall: No Year found: 2016 Country: Algeria Mass: 71.3 g | ||||||||||||||||||||
Classification history: |
This is 1 of 598 approved meteorites (plus 1 unapproved name) classified as Eucrite. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||
Comments: | Approved 9 Feb 2018 | ||||||||||||||||||||
Writeup |
Writeup from MB 107:
Northwest Africa 11595 (NWA 11595) Algeria Purchased: 2016 May 1 Classification: HED achondrite (Eucrite) History: Purchased by Miao Bing-an in 2016 in Morocco. Physical characteristics: The fusion crust has been largely weathered from the surface of the sample. The meteorite is a polymict breccia consisting of fragments of medium- to coarse-grained metamorphosed gabbroic rocks and medium- to fine-grained subophitic basaltic rocks. Dimensions: 4.5 × 6.0 × 6.4 cm. Petrography (L. Huang, B. Miao, H. Chen, GUT): Breccia containing a variety of basaltic lithologies, with <10 vol % cumulate lithologies. Cumulate eucrites lithologies are coarse grained (~0.4-0.6 mm) gabbros composed principally of low-Ca zoned clinopyroxene and calcic plagioclase. Basaltic breccia lithologies are fine grained, have mostly subophitic textures, and contain very fine-grained vitrophyric textured basaltic lithologies. A silica phase is commonly present. Accessories are ilmenite, chromite, troilite and rare iron metal. Geochemistry (L. Huang, B. Miao, H. Chen, GUT): Bulk pyroxene: Fe/Mn=34.1. Low-Ca pyroxene cumulate lithologies: median compositions are Mg#=50.9, Fs48.0Wo2.2 (n=13). Low-Ca pyroxene of basaltic lithologies: median compositions are Mg#=42.6, Fs54.6Wo4.9 (n=12). High-Ca pyroxene of basaltic lithologies: median compositions are Mg#=44.4, Fs45.3Wo19.1 (n=28). Plagioclase: An87.2-95.1Or0.41-1.56, median An92.6Or0.78 (n=12). Classification: Basaltic polymict brecciated eucrite Specimens: 25.3 g and polished thin section are deposited in GUT | ||||||||||||||||||||
Data from: MB107 Table 0 Line 0: |
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Institutions and collections |
GUT: College of Earth Sciences, Guilin University of Technology, 12 Jiangan Road, Guilin 541004, China (institutional address; updated 18 Oct 2012) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462
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Photos: |
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Geography: |
Statistics: This is 1 of 1344 approved meteorites from Algeria (plus 30 unapproved names) (plus 4 impact craters) | ||||||||||||||||||||
Also see: |
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Revision history: |
This lists important revisions made to data for this record.
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