|
Northwest Africa 11755 | |||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Basic information | Name: Northwest Africa 11755 This is an OFFICIAL meteorite name. Abbreviation: NWA 11755 Observed fall: No Year found: 2017 Country: Morocco Mass: 83 g | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 660 approved meteorites classified as Ureilite. [show all] Search for other: Achondrites, Ureilites | ||||||||||||||||||||||||||||||
Comments: | Approved 26 May 2018 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 107:
Northwest Africa 11755 (NWA 11755) Morocco Purchased: 2017 Sep Classification: Ureilite Petrography: (K. Metzler, IfP) Coarse-grained ultramafic rock with metamorphic texture (~120° triple junctions), consisting of olivine and pyroxene grains up to ~5 mm. Reverse zoning of olivine grains with Mg-rich zones at the margins and along cracks. Graphite and partly oxidized metal are concentrated along grain boundaries. Geochemistry: Mineral compositions and geochemistry: Olivine cores (n=12): Fa21.3±0.3; Olivine rims (n=5): Fa9.0±2.0. Pyroxene grains (n=13): Fs11.8±1.5Wo6.1±1.8. The Cr2O3 concentration in olivine and pyroxene is 0.7 wt% and 1.0 wt%, respectively. | ||||||||||||||||||||||||||||||
Data from: MB107 Table 0 Line 0: |
|
||||||||||||||||||||||||||||||
Institutions and collections |
IfP: Institut für Planetologie, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany (institutional address; updated 23 Jan 2012) |
||||||||||||||||||||||||||||||
Catalogs: |
| ||||||||||||||||||||||||||||||
References: | Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462
| ||||||||||||||||||||||||||||||
Geography: |
Statistics: This is 1 of 2082 approved meteorites from Morocco (plus 31 unapproved names) (plus 1 impact crater) | ||||||||||||||||||||||||||||||
Also see: |
This lists the most popular meteorites among people who looked up this meteorite.
| ||||||||||||||||||||||||||||||
Revision history: |
This lists important revisions made to data for this record.
|