|
Northwest Africa 3170 | |||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Basic information | Name: Northwest Africa 3170 This is an OFFICIAL meteorite name. Abbreviation: NWA 3170 Observed fall: No Year found: 2007 Country: (Northwest Africa) Mass: 60 g | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 13 approved meteorites classified as Lunar (gabbro). [show all] Search for other: Lunar meteorites | ||||||||||||||||||||||||||||||
Comments: | Approved 30 Oct 2012 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 101:
Northwest Africa 3170 (NWA 3170) (Northwest Africa) Purchased: 2007 Apr Classification: Lunar meteorite (gabbro) History: Purchased from a Moroccan dealer in 2007 by Stefan Ralew. Physical characteristics: A single 60 g stone consisting of large clasts of yellowish-green gabbro (containing fine, black shock veinlets) in a darker fragmental matrix. Petrography: (A. Irving and S. Kuehner, UWS) Monomict breccia consisting of ferroan gabbro clasts and related debris. Predominantly composed of olivine, clinopyroxenes and anorthite with accessory fayalite, silica, ilmenite and minor K-Ba-feldspar. Symplectitic intergrowths of hedenbergite+fayalite+silica are present. No orthopyroxene found. Geochemistry: Olivine (Fa29.6-39.9, FeO/MnO = 82-116), pigeonite (Fs42.3Wo11.9, FeO/MnO = 79), subcalcic augite (Fs28.7Wo26.2, FeO/MnO = 57), subcalcic ferroaugite (Fs64.4-78.8Wo26.3-26.2, FeO/MnO = 78-93). Bulk composition (R. Korotev, WUSL): mean values from INAA of subsamples are 20.7 wt.% FeO, 40 ppm Sc, 56 ppm Co, 110 ppm Ni, 24.3 ppm La, 11.2 ppm Sm, 0.76 ppm Eu, 8.1 ppm Yb, 4.3 ppm Th. Classification: Lunar (mare gabbro breccia). This stone is very similar in mineralogy and bulk composition to NWA 7007, and both specimens are likely paired with NWA 773. Specimens: 12.1 g is on deposit at UWS. The remaining material is held by Ralew. | ||||||||||||||||||||||||||||||
Data from: MB101 Table 0 Line 0: |
|
||||||||||||||||||||||||||||||
Institutions and collections |
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012) WUSL: Washington Univ., One Brookings Drive, St. Louis, MO 63130, United States (institutional address; updated 17 Oct 2011) UWB: University of Washington, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023) Ralew: Stefan Ralew, Kunibertstraße 29, 12524 Berlin, Germany; Website (private address) |
||||||||||||||||||||||||||||||
Catalogs: |
| ||||||||||||||||||||||||||||||
References: | Published in Meteoritical Bulletin, no. 101, MAPS 50, 1661, September 2015
| ||||||||||||||||||||||||||||||
Geography: |
Statistics: This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names) | ||||||||||||||||||||||||||||||
Crosslinks: |
This lists all records that are linked to this record and to each other.
| ||||||||||||||||||||||||||||||
Also see: |
This lists the most popular meteorites among people who looked up this meteorite.
| ||||||||||||||||||||||||||||||
Revision history: |
This lists important revisions made to data for this record.
|