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Northwest Africa 7570 | |||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 7570 This is an OFFICIAL meteorite name. Abbreviation: NWA 7570 Observed fall: No Year found: 2012 Country: Morocco Mass: ![]() | ||||||||||||||||||||||||
Classification history: |
This is 1 of 569 approved meteorites (plus 1 unapproved name) classified as Eucrite. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||
Comments: | Approved 12 Dec 2012 | ||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 101:
Northwest Africa 7570 (NWA 7570) Morocco Purchased: Sept 2012 Classification: HED achondrite (Eucrite) History: Purchased by Adam Bates from a Moroccan meteorite dealer, September, 2012. Physical characteristics: Single stone, irregular brown exterior with some iron-staining. Saw cut reveals granular texture with white and reddish-brown sub-millimeter crystals. Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows ophitic to brecciated texture, approximately 50% pyroxene and 40% plagioclase; some pyroxenes show exsolution lamellae. Ubiquitous silica, chromite, ilmenite, troilite, and low-Ni iron metal. Geochemistry: (C. Agee and M. Spilde, UNM) Pyroxene Fs40.6±12.1Wo20.5±15.9, Fe/Mn=25±1, n=22; plagioclase An87.8. Classification: Achondrite (Eucrite), equilibrated eucrite, pyroxene trend is transitional between Pomozdino (cumulate) and Juvinas (basaltic). Specimens: 21 g including a probe mount on deposit at UNM; Adam Bates holds the main mass. | ||||||||||||||||||||||||
Data from: MB101 Table 0 Line 0: |
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Institutions and collections |
UNM: Institute of Meteoritics
MSC03 2050
University of New Mexico
Albuquerque NM 87131-1126
USA, United States; Website (institutional address; updated 12 Feb 2015) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 101, MAPS 50, 1661, September 2015
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Geography:![]() |
Statistics: This is 1 of 1932 approved meteorites from Morocco (plus 27 unapproved names) (plus 1 impact crater) |