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Northwest Africa 12304
Basic information Name: Northwest Africa 12304
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12304
Observed fall: No
Year found: 2017
Country: Algeria
Mass:help 269 g
Classification
  history:
Meteoritical Bulletin:  MB 108  (2020)  L5
Recommended:  L5    [explanation]

This is 1 of 8890 approved meteorites (plus 5 unapproved names) classified as L5.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 27 Jul 2019
Writeuphelp
Writeup from MB 108:

Northwest Africa 12304 (NWA 12304)

Algeria

Purchased: 2017

Classification: Ordinary chondrite (L5)

History: (Ziyao Wang) Purchased by Ziyao Wang from Adnane Sami during the China (Hunan) Mineral & Gem Show in Chenzhou City in May 2017.

Physical characteristics: (Ziyao Wang) Strong eroded dark red stone of 269 g without fusion crust. On the surface chondrules are recognizable.

Petrography: (R. Bartoschewitz, Bart) poorly delinated chondrules (0.4-2 mm, av. 0.8 mm) of various types (PO, POP, RP, BO) and chondrule fragments are set in dark-brown oxidized matrix.

Geochemistry: (R. Bartoschewitz, Bart, P. Appel and B. Mader, Kiel) Olivine Fa23.0±0.4 (n=14); pyroxene Fs20.2±1.0Wo1.5±0.3 (n=10); Ca pyroxene En48Fs7Wo45 (n=1); chromite CRAL87, FFM87 (n=1); apatite. Magnetic susceptibility log χ (× 10-9 m3/kg) = 4.32

Classification: ordinary chondrite (L5, S2, W4)

Specimens: 16.44 g at Kiel and 3.85 g at Münster on deposit, Ziyao Wang holds the main mass, and 30 g with Bart. Polished thin sections Bart and IfP

Data from:
  MB108
  Table 0
  Line 0:
Origin or pseudonym:desert
Place of purchase:Chenzhou, Hunan
Date:P 2017
Mass (g):269
Pieces:2
Class:L5
Shock stage:S2
Weathering grade:W4
Fayalite (mol%):23.0±0.4 (n=14)
Ferrosilite (mol%):20.2±1.0 (n=10)
Wollastonite (mol%):1.5±0.3
Magnetic suscept.:4.32
Classifier:R. Bartoschewitz
Type spec mass (g):16.22 + 3.85
Type spec location:Kiel + IfP
Main mass:Ziyao Wang
Finder:anonymous
Comments:working name WZ28; submitted by R. Bartoschewitz
Institutions
   and collections		 IfP: Institut für Planetologie, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany (institutional address; updated 23 Jan 2012)
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. 108 (2020) Meteorit. Planet. Sci. 55, 1146-1150
Find references in NASA ADS:
Find references in Google Scholar:
Geography:

Algeria
Coordinates:Unknown.

Statistics:
     This is 1 of 1356 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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