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| Northwest Africa 10915 | |||||||||||||||||||||||||
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| Basic information | Name: Northwest Africa 10915 This is an OFFICIAL meteorite name. Abbreviation: NWA 10915 Observed fall: No Year found: 2015 Country: Morocco Mass:  19 g | ||||||||||||||||||||||||
| Classification history: |
This is 1 of 258 approved meteorites classified as Eucrite-mmict. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||
| Comments: | Approved 26 Nov 2016 | ||||||||||||||||||||||||
| Writeup |
Writeup from MB 105:
Northwest Africa 10915 (NWA 10915) Morocco Purchased: 2015 Classification: HED achondrite (Eucrite, monomict) History: Purchased by A. Jonikas from an unknown Moroccan dealer in early (March?) 2015, then sold to the owner by S. Arnold (of Chicago, Illinois) in October 2015. Likely recovered shortly before initial sale. Physical characteristics: A single stone mostly covered in black fusion crust. Interior is chalky white. No weathering is evident. Petrography: (C. Herd, UAb) A fragmental breccia consisting of clasts of very fine-grained (<100 μm) equigranular plagioclase and pyroxene set in a matrix with the same mineralogy. Some clasts are coarser-grained (<1 mm) and plagioclase-phyric. Texture throughout is granoblastic (abundant 120° junctions) and annealed. Pyroxene (high or low-Ca) are commonly exsolved. Accessory minerals are chromite, ilmenite, silica polymorph, and troilite. Geochemistry: (C. Herd and S. Kampel, UAb) Low-Ca pyroxene Fs60.7±0.8Wo2.6±0.6 (n=25), high-Ca pyroxene Fs26.4±0.7Wo43.2±0.6 (n=19), plagioclase An88.7±2.4 (n=30), chromite (5-7 wt% TiO2). Classification: Eucrite (granulitic monomict breccia) Specimens: A 5.4 g specimen, including one thin section, is at UAb. Main mass is with the owner. | ||||||||||||||||||||||||
| Data from: MB105 Table 0 Line 0: |
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| Institutions and collections |
UAb: 1-26 Earth Sciences Building, University of Alberta, Edmonton, AB, T6G 2E3, Canada, Canada; Website (institutional address; updated 17 Oct 2011) |
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| Catalogs: |
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| References: | Published in Meteoritical Bulletin, no. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full
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Geography:
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Statistics: This is 1 of 1836 approved meteorites from Morocco (plus 24 unapproved names) (plus 1 impact crater) | ||||||||||||||||||||||||