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| Northwest Africa 6870 | |||||||||||||||||||||||||||||||
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| Basic information | Name: Northwest Africa 6870 This is an OFFICIAL meteorite name. Abbreviation: NWA 6870 Observed fall: No Year found: 2011 Country: (Northwest Africa) Mass:  1950 g | ||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 470 approved meteorites (plus 2 unapproved names) classified as CV3. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CV chondrites, and CV-CK clan chondrites | ||||||||||||||||||||||||||||||
| Comments: | Approved 17 Feb 2017 | ||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB online:
Northwest Africa 6870 (NWA 6870) (Northwest Africa) Purchased: 2011 May Classification: Carbonaceous chondrite (CV3) History: Purchased by Greg Catterton in May 2011 from a dealer in Ouarzazate, Morocco. Physical characteristics: Petrography: (A. Irving and S. Kuehner, UWS) Round to irregular-shaped chondrules (mostly granular, some rimmed) and fine grained CAIs are set in a dark brown matrix. Geochemistry: Olivine (Fa1.0-32.7), orthopyroxene (Fs0.9-1.1Wo1.1-0.8), augite (Fs1.0Wo38.5); diopside in one CAI is Fs0.2Wo50.2. Oxygen isotopes of acid-washed subsamples: d17O -6.880, -7.446; d18O -2.347, -3.062; D17O -5.665, -5.858 per mil (Ryoji Tanaka, Okayama University). Classification: Carbonaceous chondrite (CV3). Specimens: 20 g including one polished thin section at UWB; remainder with Mr. G. Catterton. Writeup from MB 106: Northwest Africa 6870 (NWA 6870) Northwest Africa Purchased: 2011 May Classification: Carbonaceous chondrite (CV3) History: Purchased by Greg Catterton in May 2011 from a dealer in Ouarzazate, Morocco. Petrography: (A. Irving and S. Kuehner, UWS) Round to irregular-shaped mm-sized chondrules (mostly granular, some rimmed) and fine grained CAIs are set in a dark brown matrix. Geochemistry: Olivine (Fa1.0, Fa32.7, N=2), orthopyroxene (Fs0.9Wo1.1, Fs1.1Wo0.8, 0.8, N=2), augite (Fs1.0Wo38.5, N=1); diopside in one CAI is Fs0.2Wo50.2 (N=1). Oxygen isotopes of acid-washed subsamples: δ17O -6.880, -7.446; δ18O -2.347, -3.062; Δ17O -5.665, -5.858 per mil (Ryoji Tanaka, OkaU). Classification: Carbonaceous chondrite (CV3). Specimens: 20 g including one polished thin section at UWB; 26.6 g and two polished mounts at App; remainder with Mr. G. Catterton. | ||||||||||||||||||||||||||||||
| Data from: MB106 Table 0 Line 0: |
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| Plots: | O isotopes: | ||||||||||||||||||||||||||||||
| Institutions and collections |
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012) App: Department of Geology, 572 Rivers St., Appalachian State University, Boone, NC 28608, United States (institutional address; updated 7 Mar 2013) UWB: University of Washington, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023) OkaU: Institute for Study of the Earth's Interior, Okayama University, Misasa Tottori 682-0193, Japan (institutional address) |
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| Catalogs: |
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| References: | Published in Published in Gattacceca J., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.
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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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