|
Northwest Africa 10714 | |||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Basic information | Name: Northwest Africa 10714 This is an OFFICIAL meteorite name. Abbreviation: NWA 10714 Observed fall: No Year found: 2015 Country: Mauritania Mass: 178.2 g | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 645 approved meteorites (plus 1 unapproved name) classified as CO3. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CM-CO clan chondrites, and CO chondrites | ||||||||||||||||||||||||||||||
Comments: | Approved 20 Jun 2016 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 105:
Northwest Africa 10714 (NWA 10714) Mauritania Purchased: 2015 Dec 1 Classification: Carbonaceous chondrite (CO3) History: Purchased 1 Dec 2015 in Mauritania. Recovered from near the border region of Western Sahara, Mauritania and Algeria. Physical characteristics: Single stone. Weathered dark brown exterior; saw cut reveals many small chondrules in a dark brown matrix. Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows numerous chondrules, some fragmental or irregular, most in the size range 50-200 μm, a few up to 400 μm. Scattered metal/sulfide blebs, fine-grained matrix makes up about 35% of this meteorite. Geochemistry: (C. Agee and M. Spilde, UNM) All chondrule olivine Fa19.8±20.0, Fe/Mn=62±43, Cr2O3=0.24±0.12, n=16; Type I chondrule olivine Fa1.1±0.5, Cr2O3=0.21±0.06, n=6; ferroan chondrule olivine Fa31.0±17.1, Fe/Mn=81±43, Cr2O3=0.26±0.15, n=10; Type I chondrule low-Ca pyroxene Fs1.3±0.5Wo1.2±0.8, n=7; Type II chondrule low-Ca pyroxene Fs31.0Wo2.9, Fe/Mn=43, n=1; aluminous diopside Fs1.1±0.5Wo40.4±7.7, n=5. Classification: Carbonaceous chondrite (CO3), likely type 3.1 based on mean value and sigma of Cr2O3 in ferroan olivine (Grossman and Brearley, 2005), however there were too few Type II chondrules present (n=10) in the probe section to obtain good statistics. Specimens: 21 g including a probe mount on deposit at UNM, DPitt holds the main mass. | ||||||||||||||||||||||||||||||
Bibliography: |
| ||||||||||||||||||||||||||||||
Data from: MB105 Table 0 Line 0: |
|
||||||||||||||||||||||||||||||
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) DPitt: Darryl Pitt, 225 West 83rd Street, New York, NY 10024, United States; Website (private address) |
||||||||||||||||||||||||||||||
Catalogs: |
| ||||||||||||||||||||||||||||||
References: | Published in Meteoritical Bulletin, no. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full
| ||||||||||||||||||||||||||||||
Geography: |
Statistics: This is 1 of 221 approved meteorites from Mauritania (plus 2 unapproved names) (plus 2 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.
|