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Northwest Africa 16535
Basic information Name: Northwest Africa 16535
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 16535
Observed fall: No
Year found: 2022
Country: (Northwest Africa)
Mass:help 165 g
Classification
  history:
Recommended:  Lunar (melt breccia)    [explanation]

This is 1 of 28 approved meteorites classified as Lunar (melt breccia).   [show all]
Search for other: Lunar meteorites
Comments: Approved 30 Mar 2024
Writeuphelp
Writeup from MB 113:

Northwest Africa 16535 (NWA 16535)

(Northwest Africa)

Purchased: 2022

Classification: Lunar meteorite (melt breccia)

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

Physical characteristics: Five grayish-greenish fragments lacking fusion crust.

Petrography: Melt breccia composed of up to 1 cm sized mostly angular to subrounded grayish-greenish clasts set in abundant melt rock matrix. Major phases are Ca-rich plagioclase, often zoned augite and less abundant olivine. Minor phases include ilmenite, chromite, and troilite.

Geochemistry: olivine: Fa37.9±0.5 (Fa37.3-38.5, FeO/MnO=80±6, n=7); zoned Ca-pyroxene: Fs16.6±1.8Wo35.8±5.3 (Fs13.9-19.1Wo26.6-42.0, FeO/MnO=39±3, n=7); calcic plagioclase: An96.2±0.2 (An95.9-96.6, n=7)

Classification: Melt breccia (anorthositic norite/gabbro) based on Stoeffler et al. (1980). Possibly paired with Adrar 013.

Bibliography:
  • Stoeffler D., Knoell H.-D., Marvin U.B., Simonds C.H., and Warren, P.H. (1980) Recommended classification and nomenclature of lunar highland rocks - A committee report. In: Conference on the Lunar Highlands Crust, Houston, Tex., November 14-16, 1979, Proceedings. (A81-26201 10-91) New York and Oxford, Pergamon Press, 1980, p. 51-70. (link)
Data from:
  MB113
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2022
Mass (g):165
Pieces:5
Class:Lunar (melt breccia)
Shock stage:high
Weathering grade:moderate
Fayalite (mol%):37.9
Ferrosilite (mol%):16.6
Wollastonite (mol%):35.8
Classifier:A. Greshake, MNB
Type spec mass (g):20.2
Type spec location:MNB
Main mass:Mario Suppes
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. 113, in preparation (2024)
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)

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