| MetSoc Home Publications Contacts |
|
||
|
||
| Northwest Africa 15749 | |||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Basic information | Name: Northwest Africa 15749 This is an OFFICIAL meteorite name. Abbreviation: NWA 15749 Observed fall: No Year found: 2022 Country: Algeria Mass:  34 g | ||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 636 approved meteorites classified as CM2. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), CM chondrites, and CM-CO clan chondrites | ||||||||||||||||||||||||||||||
| Comments: | Approved 4 Mar 2023 | ||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 112:
Northwest Africa 15749 (NWA 15749) Algeria Find: 2022 Classification: Carbonaceous chondrite (CM2) History: The stones were found by nomads in Algeria in 2022. and later bought by Pierre-Marie Pelé. Physical characteristics: Dark grey fragments Petrography: (J. Gattacceca, CEREGE; T. Prestgard, IPAG) Chondrite with small chondrules, chondrule fragments and CAIs (to 300 µm) set in an abundant iron-rich, fine-grained matrix (65 vol%). Many chondrules have fine-grained dust rims with radial cracks. Opaque minerals: sulfides (2.9 vol%), magnetite (2.1 vol%), metal (1.1 vol%, by point counting). X-ray diffraction analyses over a ~2 cm2 area on a polished section (D. Borschnek, CEREGE) reveal the presence of phyllosilicates, as typically observed in type 2 chondrites using the same experimental setup. Geochemistry: Olivine Fa10.1±11.0, range Fa0.4-30.5 (n=10), Cr2O3 content in ferroan olivine Cr2O3 0.37±0.16 (n=5). Pyroxene Fs1.1±0.1Wo0.8±0.0 (n=3). Defocused anlyses of matrix FeO 37.2 wt%, analytical total 88.3 wt% Classification: Carbonaceous chondrite (CM2) Specimens: Type specimen at CEREGE. Main mass with Pierre-Marie Pelé. | ||||||||||||||||||||||||||||||
| Data from: MB112 Table 0 Line 0: |
|
||||||||||||||||||||||||||||||
| Institutions and collections |
CEREGE: CEREGE
BP 80
Avenue Philibert, Technopole de l'Arbois
13545 Aix-en-Provence Cedex 4
France, France (institutional address; updated 10 Jun 2023) IPAG: Institut de Planétologie et d’Astrophysique de Grenoble 414, Rue de la Piscine Domaine Universitaire 38400 St-Martin d’Hères , France (institutional address; updated 1 Aug 2013) |
||||||||||||||||||||||||||||||
| Catalogs: |
| ||||||||||||||||||||||||||||||
| References: | Published in Meteoritical Bulletin, no. 112, in preparation (2023)
| ||||||||||||||||||||||||||||||
Geography:
|
Statistics: This is 1 of 1356 approved meteorites from Algeria (plus 30 unapproved names) (plus 4 impact craters) | ||||||||||||||||||||||||||||||
| 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.
| ||||||||||||||||||||||||||||||