![]() |
||
|
Northwest Africa 4397 | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Basic information | Name: Northwest Africa 4397 This is an OFFICIAL meteorite name. Abbreviation: NWA 4397 Observed fall: No Year found: 2006 Country: (Northwest Africa) Mass: ![]() | ||||||||||||
Classification history: |
This is 1 of 391 approved meteorites classified as Eucrite-pmict. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||
Comments: | Approved 24 Jul 2007 | ||||||||||||
Writeup![]() |
Writeup from MB 92:
Northwest Africa 4397 Northwest Africa Find: 2006 Achondrite (eucrite, polymict) History: The meteorite was recovered by an anonymous finder in northwest Africa and purchased by the main mass holder in Tagounite, Morocco. Physical characteristics: A single stone of 34 g was recovered. Petrography: (A. Greshake, MNB) The meteorite consists of coarse- and fine-grained basaltic and mineral clasts embedded in a fine-grained clastic matrix. Mineral fragments are mostly plagioclase and exsolved Ca-pyroxene. Minor phases include silica, ilmenite, and troilite. Mineral compositions: Plagioclase (An68.1-92.7) and pyroxene (Fs36.7-58.8Wo8-28). Classification: Achondrite (eucrite, polymict); minimum shock, moderate to extensive weathering. Type specimens: A total of 6.8 g of sample plus one polished thin section are on deposit at MNB. Ralew holds the main mass. | ||||||||||||
Data from: MB92 Table 2 Line 67: |
|
||||||||||||
Institutions and collections |
MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011) Ralew: Stefan Ralew, Kunibertstraße 29, 12524 Berlin, Germany; Website (private address) |
||||||||||||
Catalogs: |
| ||||||||||||
References: | Published in Meteoritical Bulletin, no. 92, MAPS 42, 1647-1694 (2007)
| ||||||||||||
Photos: |
| ||||||||||||
Geography: |
Statistics: This is 1 of 8890 approved meteorites from (Northwest Africa) (plus 1871 unapproved names) |