| MetSoc Home Publications Contacts |
|
||
|
||
| Northwest Africa 13472 | |||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Basic information | Name: Northwest Africa 13472 This is an OFFICIAL meteorite name. Abbreviation: NWA 13472 Observed fall: No Year found: 2018 Country: Mauritania Mass:  814 g | ||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 91 approved meteorites classified as LL4-6. [show all] Search for other: LL chondrites, LL chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7) | ||||||||||||||||||||||||||||
| Comments: | Approved 2 Nov 2020 | ||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 109:
Northwest Africa 13472 (NWA 13472) Mauritania Find: 2018 Classification: Ordinary chondrite (LL4-6) History: Collected by a nomad in an undetermined place in northern Mauritania during 2018. Purchased by Geologist Juan Avilés Poblador in Spring 2019 on behalf of the University of Alicante (Earth Sciences Department, Laboratory of Applied Petrology). Physical characteristics: The single, 814 g stone has a tan colour and is partially covered by a dark fusion crust. Cut surfaces reveal a brecciated texture, including clasts up to ~3 cm across. Petrography: (C. Herd, UAb) Optical and microprobe examination of a polished thin section shows two ~10 mm wide equilibrated clasts in a matrix of well-delineated chondrules. Minor iron staining is present. Olivine in the matrix has sharp optical extinction with <2° angular variation (S1); in the clasts it has weak mosacism and planar fractures (S4). Geochemistry: (C. Herd and A. Locock, UAb) Data obtained by EMP examination of carbon-coated thin section: Olivine Fa29.3±0.9 (n=144); Low-Ca Pyroxene Fs24.1±0.8Wo1.3±0.5 (n=64). Classification: Ordinary chondrite, LL4-6 Specimens: Type specimen of 46.9 g, including one thin section, is at UAb. Main mass at UAlic. | ||||||||||||||||||||||||||||
| Data from: MB109 Table 0 Line 0: |
|
||||||||||||||||||||||||||||
| 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) UAlic: Earth Sciences Department University of Alicante San Vicente del Raspeig, Spain (institutional address; updated 9 Feb 2020) |
||||||||||||||||||||||||||||
| Catalogs: |
| ||||||||||||||||||||||||||||
| References: | Published in Gattacceca J., McCubbin F. M., Grossman J., Bouvier A., Bullock E., Chennaoui Aoudjehane H., Debaille V., D’Orazio M., Komatsu M., Miao B. and Schrader D. L. (2021) The Meteoritical Bulletin, No. 109. Meteoritics & Planetary Science 56, 1626–1630.
| ||||||||||||||||||||||||||||
Geography:
|
Statistics: This is 1 of 232 approved meteorites from Mauritania (plus 2 unapproved names) (plus 2 impact craters) | ||||||||||||||||||||||||||||