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Northwest Africa 11102 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 11102 This is an OFFICIAL meteorite name. Abbreviation: NWA 11102 Observed fall: No Year found: 2016 Country: Morocco Mass: 1860 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 19 Feb 2017 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 106:
Northwest Africa 11102 (NWA 11102) Morocco Purchased: 2016 Dec Classification: Carbonaceous chondrite (CV3) History: Purchased by Ke Zuokai in Dec. 2016 from a Moroccan dealer. Physical characteristics: The meteorite is covered by a dark-brown fusion crust. Abundant round chondrules ranging from white to dark gray are visible. Petrography: The thin section shows abundant well-defined chondrules (ranging from 0.3 to 1.5 mm with most being mm-sized) set in a fine-grained matrix. Most of the chondrules have porhyritic texture, and some of them are surrounded by igneous rims or opaque minerals. Fe-rich augite is identified within fine-grained inclusions associated with fayalitic olivine, orthopyroxene and altered minerals. A few fragments of CAIs consisting of Al, Ca-pyroxene and saponite were identified in this thin section. The matrix abundance is approximately 42%. Other accessory phases include metal, troilite and Fe-oxides. Geochemistry: Silicates are unequilibrated. Olivine Fa0.7-51.3 (Fa16.8±13.6; PMD=67.1%, n=48); low-Ca pyroxene Fs2.5-31.1Wo0-4.9 (Fs13.7±8.9Wo1.3±1.4, Fs PMD=51.5%, n=27); pigeonite Fs23.6-29.8Wo5.1-13.0; minor augite Fs17.8Wo30.3. Classification: CV3 classification based on mm-sized chondrules with mostly porhyritic textures and the presence of AOA and altered minerals. | ||||||||||||||||||||||||||||||
Data from: MB106 Table 0 Line 0: |
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Institutions and collections |
PMO: Purple Mountain Observatory, Nanjing, China (institutional address; updated 16 Dec 2011) |
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Catalogs: |
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References: | 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 2082 approved meteorites from Morocco (plus 31 unapproved names) (plus 1 impact crater) | ||||||||||||||||||||||||||||||
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Revision history: |
This lists important revisions made to data for this record.
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