|
Northwest Africa 13877 | |||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Basic information | Name: Northwest Africa 13877 This is an OFFICIAL meteorite name. Abbreviation: NWA 13877 Observed fall: No Year found: 2020 Country: (Northwest Africa) Mass: 1025 g | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 86 approved meteorites classified as CK3. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CK chondrites, CK3 chondrites, and CV-CK clan chondrites | ||||||||||||||||||||||||||||||
Comments: | Approved 17 Jul 2021 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 110:
Northwest Africa 13877 (NWA 13877) (Northwest Africa) Purchased: 2020 Classification: Carbonaceous chondrite (CK3) History: Purchased by Matt Morgan from a Moroccan meteorite dealer, December 2020. Physical characteristics: Single stone, dark weathered fusion crust on exterior. Saw cuts reveal numerous distinct chondrules set in a brown-green fine-grained matrix. Scattered CAIs are visible throughout. Petrography: (C. Agee, UNM) This meteorite has primarily type-I porphyritic chondrules with forsteritic olivines and enstatitic pyroxenes. Most chondrules have glass or mesostasis, no feldspar was observed. Average apparent chondrule size 1200±600 µm (n=20). A single barred chondrule with fayalitic olivine was observed. Fine-grained matrix makes up about 60% of this meteorite. Ubiquitous chromium-bearing magnetite was detected in the chondrules as well as in the matrix. No metal was detected. Geochemistry: (C. Agee, UNM) chondrule olivine Fa2.1±2.0, Fe/Mn=57±5 (range 8-147), Cr2O3= 0.21±0.08 (wt%), n=12; fayalitic olivine Fa54, Fe/Mn=101; chondrule enstatite Fs1.3±0.7Wo1.0±0.2, n=6; magnetite Cr2O3=1.5±0.6 wt%. Classification: Carbonaceous chondrite CK3. CK based on the presence of chromium-bearing magnetite and absence of metal. Cr2O3 content in olivine suggests type within the range 3.0-3.2. Specimens: 20.5 g including a probe mount on deposit at UNM, Matt Morgan holds the main mass. | ||||||||||||||||||||||||||||||
Data from: MB110 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) |
||||||||||||||||||||||||||||||
Catalogs: |
| ||||||||||||||||||||||||||||||
References: | Published in Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4
| ||||||||||||||||||||||||||||||
Geography: |
Statistics: This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names) | ||||||||||||||||||||||||||||||
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.
|