| MetSoc Home Publications Contacts |
|
||
|
||
| Northwest Africa 6926 | |||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Basic information | Name: Northwest Africa 6926 This is an OFFICIAL meteorite name. Abbreviation: NWA 6926 Observed fall: No Year found: 2011 Country: (Northwest Africa) Mass:  220 g | ||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 128 approved meteorites classified as Achondrite-ung. [show all] Search for other: Achondrites, Ungrouped achondrites | ||||||||||||||||||||||||||||||
| Comments: | Approved 31 Jan 2012 | ||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 100:
Northwest Africa 6926 (NWA 6926) (Northwest Africa) Purchased: Jan 2011 Classification: Ungrouped achondrite History: Purchased in 2011 January by Gary Fujihara from a Moroccan dealer in Zagora. Physical characteristics: Multiple small fragments (total weight 220 g) of coarse grained, yellowish-green stones (some with thin partial coatings of pale orange clay-like material). Petrography: Very fresh specimen with cumulate igneous texture. Large oikocrysts of orthopyroxene enclose chadacrysts of olivine and chromite, with interstitial albitic plagioclase and small grains of very Ni-rich metal (awaruite). Trains of tiny fluid-like bubbles are present especially in orthopyroxene. Geochemistry: Orthopyroxene Fs41.4-41.7Wo3.7 (Fe/Mn=80-87), olivine Fa51.8-51.9 (Fe/Mn=141-156; NiO=0.74 wt.%). Classification: Ungrouped achondrite. This material is essentially identical to NWA 6693 and NWA 6704, and likely represents a portion of one of those two large stones (probably NWA 6704, since its reassembled mass was not complete). Specimens: A total of 20 g of material and one polished thin section is on deposit at UWS. Mr. G. Fujihara holds the main mass. | ||||||||||||||||||||||||||||||
| Data from: MB100 Table 1 Line 1542: |
|
||||||||||||||||||||||||||||||
| 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) |
||||||||||||||||||||||||||||||
| Catalogs: |
| ||||||||||||||||||||||||||||||
| References: | Published in Meteoritical Bulletin, no. 100, MAPS 49, E1-E101 (2014)
| ||||||||||||||||||||||||||||||
| Photos: |
| ||||||||||||||||||||||||||||||
| Geography: |
Statistics: This is 1 of 9013 approved meteorites from (Northwest Africa) (plus 1869 unapproved names) | ||||||||||||||||||||||||||||||