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Northwest Africa 16166
Basic information Name: Northwest Africa 16166
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 16166
Observed fall: No
Year found: 2023
Country: (Northwest Africa)
Mass:help 1090 g
Classification
  history:
Meteoritical Bulletin:  MB 112  (2023)  Eucrite
Recommended:  Eucrite    [explanation]

This is 1 of 605 approved meteorites (plus 1 unapproved name) classified as Eucrite.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 3 Sep 2023
Writeuphelp
Writeup from MB 112:

Northwest Africa 16166 (NWA 16166)

(Northwest Africa)

Purchased: 2023 Apr

Classification: HED achondrite (Eucrite)

History: The meteorite was purchased from a meteorite dealer in Morocco.

Physical characteristics: Grayish rock partly covered with fusion crust.

Petrography: The meteorite is a breccia composed of cm-sized basaltic clasts plus large fine-grained metamorphosed regions in minor fine-grained clastic matrix. Main mineral phases are exsolved pyroxene and calcic plagioclase. Minor phases include silica, chromite, ilmenite, and FeS. No metallic iron detected.

Geochemistry: low-Ca pyroxene host to exsolution lamellae: Fs59.8±0.4Wo2.2±0.4 (Fs59.1-60.3Wo1.8-3.0, FeO/MnO=29-31, n=7); Ca-pyroxene exsolution lamellae: Fs25.3±0.2Wo43.7±0.4 (Fs24.9-25.5Wo43.2-44.3, FeO/MnO=26-29, n=7); calcic plagioclase: An89.6±0.8 (An88.6-90.8, n=7).

Data from:
  MB112
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2023 Apr
Mass (g):1090
Pieces:1
Class:Eucrite
Shock stage:moderate
Weathering grade:low
Ferrosilite (mol%):59.8; 25.3
Wollastonite (mol%):2.2; 43.7
Classifier:A. Greshake, MNB
Type spec mass (g):41.9
Type spec location:MNB
Main mass:David Göttlich
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
Catalogs:
References: Published in Meteoritical Bulletin, no. 112, in preparation (2023)
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9729 approved meteorites from (Northwest Africa) (plus 1859 unapproved names)

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