Meteoritical Bulletin: Entry for Northwest Africa 12788

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Northwest Africa 12788

Basic information

Name: Northwest Africa 12788
This is an OFFICIAL meteorite name.
Abbreviation: NWA 12788
Observed fall: No
Year found: 2019
Country: Algeria
Mass: 22 g

Classification
history:

Meteoritical Bulletin:	MB 112	(2023)	Lunar (feldsp. breccia)
Recommended:			Lunar (feldsp. breccia) [explanation]

This is 1 of 340 approved meteorites classified as Lunar (feldsp. breccia). [show all]
Search for other: Lunar meteorites

Comments:

Approved 23 Feb 2023

Writeup

help

Writeup from MB 112:

Northwest Africa 12788 (NWA 12788)

Algeria

Purchased: 2019

Classification: Lunar meteorite (feldspathic breccia)

History: (Ziyao Wang) Purchased by Ziyao Wang from Fayssal Mezgouri in Agadir, Morocco, Apr 2019.

Physical characteristics: (Ziyao Wang) 4 white stones totalling 22 g, without fusion crust

Petrography: (R. Bartoschewitz, Bart) fine-grained, microvesicular, melt-textured breccia consisting of mineral fragments (olivine, pyroxene, plagioclase, accessory chromite, ilmenite troilite, metal) and lithic clasts (gabbroic, anorthositic).

Geochemistry: (R. Bartoschewitz, Bart, P. Appel and B. Mader, Kiel) Olivine Fa_24.3±4.2, Fe/Mn=88 (n=4); low Ca pyroxene Fs_18.4±5.0Wo_3.4±1.0, Fe/Mn=57 (n=3); pigeonite En₇₁Fs₂₃Wo₆(n=1); augite En₄₁Fs₁₃Wo₄₅(n=1); plagioclase An_95-98Or<0.2 (n=12); chromite CRAL62-74, FFM72-80 (n=3); ilmenite. Taenite Ni=21-23, Co=1.8-2.6 wt% (n=3); troilite; pyrrhotite. Magnetic susceptibility (R. Bartoschewitz, Bart) log χ (× 10^-9 m³/kg) = 2.38.

Classification: Lunar (feldspatic melt-breccia)

Specimens: 4.42 g on deposit at Kiel, Wang Ziyao holds the main mass, and 3 g with Bart.

Data from:
  MB112
  Table 0
  Line 0:

Origin or pseudonym:	desert
Place of purchase:	Agadir, Morocco
Date:	P 2019
Mass (g):	22
Pieces:	4
Class:	Lunar (feldsp. breccia)
Fayalite (mol%):	24.3±4.2 (n=4)
Ferrosilite (mol%):	18.4±5.0 (n=3)
Wollastonite (mol%):	3.4±1.0
Magnetic suscept.:	2.38
Classifier:	R. Bartoschewitz
Type spec mass (g):	4.42
Type spec location:	Kiel
Main mass:	Ziyao Wang
Finder:	anonymous
Comments:	working name WZ122; submitted by R. Bartoschewitz

Institutions
and collections

Kiel: Geologisches und Mineralogisches Museum, Institut für Geowissenschaften, Christian-Albrechts-Universität Kiel, Ludewig-Mayn-Str. 10, D-24118 Kiel, Germany, Germany (institutional address; updated 13 Sep 2013)
Bart: Bartoschewitz Meteorite Laboratory, Weiland 37, D-38518 Gifhorn, Germany; Website (private address; updated 30 Nov 2019)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 112, in preparation (2023)

Find references in NASA ADS:
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Photos:

Credit	Photos
Photos uploaded by members of the Encyclopedia of Meteorites. (Caution, these are of unknown reliability)
Ziyao Wang

Geography:

Algeria

Algeria

Coordinates:

Unknown.

Statistics:
This is 1 of 1358 approved meteorites from Algeria (plus 30 unapproved names) (plus 4 impact craters)

Also see:

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Revision
history:

This lists important revisions made to data for this record.

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