Meteoritical Bulletin: Entry for Northwest Africa 12317

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Northwest Africa 12317

Basic information

Name: Northwest Africa 12317
This is an OFFICIAL meteorite name.
Abbreviation: NWA 12317
Observed fall: No
Year found: 2017
Country: (Northwest Africa)
Mass: 397 g

Classification
history:

Meteoritical Bulletin:	MB 108	(2020)	CO3
Recommended:			CO3 [explanation]

This is 1 of 645 approved meteorites (plus 1 unapproved name) classified as CO3. [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CM-CO clan chondrites, and CO chondrites

Comments:

Approved 21 Sep 2019

Writeup

Writeup from MB 108:

Northwest Africa 12317 (NWA 12317)

(Northwest Africa)

Purchased: April 2017

Classification: Carbonaceous chondrite (CO3)

History: Discovered by an anonymous person an purchased in Erfoud in April 2017

Petrography: (R. Bartoschewitz, Bart) Chondrules (avaerage ~ 200 µm), chondrule fragments, and CAIs are embedded in a fine-grained brownish matrix (about 20 vol%). Magnetic susceptibility logc=4.10.

Geochemistry: (R. Bartoschewitz, Bart, P. Appel and B. Mader, Kiel) Random measurements of olivine grains revealed Fa_37.8±2.9(Fa_29.2-44.8), n=24; feldspar An₆₀Ab₃₈(n=1). Taenite Ni=38.4, Co=0.4 wt.-% (n=1).

Classification: Carbonaceous chondrite (CO3, S1)

Specimens: 20.2 g on deposit at Kiel, main mass anonymous

Data from:
  MB108
  Table 0
  Line 0:

Place of purchase:	Erfoud
Date:	P April 2017
Mass (g):	397
Pieces:	2
Class:	CO3
Shock stage:	S1
Fayalite (mol%):	37.8±2.9 (n=24)
Magnetic suscept.:	4.10
Classifier:	R. Bartoschewitz
Type spec mass (g):	20.2
Type spec location:	Kiel
Main mass:	anonymous
Finder:	anonymous
Comments:	working name K370; 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. 108 (2020) Meteorit. Planet. Sci. 55, 1146-1150

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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9710 approved meteorites from (Northwest Africa) (plus 1853 unapproved names)

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.

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