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| Northwest Africa 13695 | |||||||||||||||||||||||||||||||
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| Basic information | Name: Northwest Africa 13695 This is an OFFICIAL meteorite name. Abbreviation: NWA 13695 Observed fall: No Year found: 2018 Country: (Northwest Africa) Mass:  728 g | ||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 8890 approved meteorites (plus 5 unapproved names) classified as L5. [show all] Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7) | ||||||||||||||||||||||||||||||
| Comments: | Approved 31 Jan 2021 | ||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 110:
Northwest Africa 13695 (NWA 13695) (Northwest Africa) Purchased: 22 June 2019 Classification: Ordinary chondrite (L5) History: A 727.7 g single fragment was purchased by Andries Goedhart from a dealer at the Ensisheim show (22 June 2019). Seller: Adrian Contreras Gomes Adrian Contreras Gomes bought the stone on 6 September 2018 from Hmad Ait Hssain in El Aaiun, Western Sahara. Physical characteristics: The color of the meteorite is pale brown. The stone is very rusty, partly surrounded by fusion crust. Petrography (I. Baziotis; S. Xydous AUA): Textural observations of the thin section in both transmitted and reflected light showed that it is chondritic. It contains porphyritic and non-porphyritic chondrules, both type II (Mg/(Mg+Fe)<90). The barred olivine chondrules have irregular shape with non-discernible edges. The groundmass consists of olivine, low-Ca pyroxene (orthopyroxene), high-Ca pyroxene, plagioclase, metal, oxides (chromites), troilite, and phosphates (merrillite and Cl-apatite). The olivines and plagioclase show sharp extinction, no undulatory features, suggesting shock stage S1. Geochemistry: Olivine Fa25.2±1.0 (n=31); orthopyroxene Fs21.6±0.2Wo1.25±0.20 (n=21); High-Ca pyroxene Fs9.2±1.6Wo44.7±1.2 (n=20); Sulfide [Ni average 0.45 (n=8)]. Metal: Kamacite with Ni in the range 5.74-10.1 wt% (n=6), and taenite with Ni in the range 16.3-23.3 (n=6). Phosphates occur as merrilite with Mg# in the range 83-90 (n=3) and Cl-apatites with Cl in the range 3.96-5.31 wt% and F in the range 0.41-0.69 wt% (n=9). Plagioclase Ab81.1-84.6 (n=16). Classification: Ordinary chondrite (L5, S1, W2) Specimens: 32.55 g at NHMV | ||||||||||||||||||||||||||||||
| Data from: MB110 Table 0 Line 0: |
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| Institutions and collections |
NHMV: Naturhistorisches Museum, Burgring 7, 1010 Wien, Austria, Austria; Website (institutional address; updated 18 Jan 2019) AUA: Department of Natural Resources Management and Agricultural Engineering Agricultural Univ. of Athens Iera Odos 75, 11855 Athens, Greece (institutional address; updated 10 Mar 2018) |
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| Catalogs: |
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| 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
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| 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.
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| Revision history: |
This lists important revisions made to data for this record.
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