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| Northwest Africa 10907 | |||||||||||||||||||||||||||||||||
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| Basic information | Name: Northwest Africa 10907 This is an OFFICIAL meteorite name. Abbreviation: NWA 10907 Observed fall: No Year found: 2016 Country: Morocco Mass:  33.8 g | ||||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 622 approved meteorites classified as CM2. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), CM chondrites, and CM-CO clan chondrites | ||||||||||||||||||||||||||||||||
| Comments: | Approved 6 Apr 2017 | ||||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 106:
Northwest Africa 10907 (NWA 10907) Morocco Purchased: 2016 Classification: Carbonaceous chondrite (CM2) Petrography: The sample consists of about 20-30% chondrules, chondrule fragments, some small CAIs and 70-80% of a phyllosilicate-rich matrix (as indicated by low analytical totals) and opaques (mainly sulfides and minor metals). Most chondrules have a size of about 200-400 μm and many are surrounded by fine-grained, phyllosilicates-rich dust rims. Randomly selected olivines analyzed in chondrules and chondrule fragments revealed a mean composition of Fa17.2±19.5 with a range of Fa0.4-59.0. Most low-Ca pyroxene is enstatite (Fs<2), but also some low Ca-pyroxene with high Fs-content exists (e.g., Fs16). The olivine shows undulatory extinction. Thus, the rock is very weakly shocked (S2). The sample is moderately weathered and about half of the metal has been oxidized. | ||||||||||||||||||||||||||||||||
| Data from: MB106 Table 0 Line 0: |
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| Institutions and collections |
IfP: Institut für Planetologie, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany (institutional address; updated 23 Jan 2012) |
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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:
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Statistics: This is 1 of 1974 approved meteorites from Morocco (plus 37 unapproved names) (plus 1 impact crater) | ||||||||||||||||||||||||||||||||