Meteoritical Bulletin: Entry for Northwest Africa 13655

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Northwest Africa 13655

Basic information

Name: Northwest Africa 13655
This is an OFFICIAL meteorite name.
Abbreviation: NWA 13655
Observed fall: No
Year found: 2009
Country: (Northwest Africa)
Mass: 499 g

Classification
history:

Recommended:

CV3 [explanation]

This is 1 of 622 approved meteorites (plus 1 unapproved name) classified as CV3. [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CV chondrites, and CV-CK clan chondrites

Comments:

Approved 16 Jan 2021

Writeup

Writeup from MB 110:

Northwest Africa 13655 (NWA 13655)

(Northwest Africa)

Purchased: 2009 Jun 19

Classification: Carbonaceous chondrite (CV3)

Petrography: (K. Metzler, IfP) Chondrules, CAIs and AOAs are embedded in a fine-grained dark matrix (about 40 vol% matrix). Most chondrules have apparent diameters between 0.3 and 1.2 mm, some up to 2 mm. Type II chondrules are rare. Opaque minerals are magnetite, troilite, pentlandite.

Geochemistry: Mineral compositions and geochemistry: Random measurements of olivine grains revealed Fa_7.7±7.1(Fa_0.2-23.8); n=19. Random measurements of low-Ca pyroxene grains revealed Fs_1.9±0.7Wo_0.9±0.7(Fs_1.1-2.8Wo_0.1-2.5); n=12.

Classification: CV chondrite based on CAI and AOA occurrence, size of chondrules and CAIs, chondrule-matrix ratio, and mineral chemistry. Petrologic type 3 based on the chemical variation of olivine and pyroxene.

Data from:
  MB110
  Table 0
  Line 0:

Place of purchase:	Ensisheim, France
Date:	P 2009 Jun 19
Mass (g):	499
Pieces:	3
Class:	CV3
Shock stage:	C-S3
Weathering grade:	low
Fayalite (mol%):	7.7±7.1
Ferrosilite (mol%):	1.9±0.7
Wollastonite (mol%):	0.9±0.7
Classifier:	K. Metzler, IfP
Type spec mass (g):	20
Type spec location:	IfP
Main mass:	anonymous
Comments:	Submitted by K.Metzler, IfP

Institutions
and collections

IfP: Institut für Planetologie, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany (institutional address; updated 23 Jan 2012)

Catalogs:

References:

Published in Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4

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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9370 approved meteorites from (Northwest Africa) (plus 1875 unapproved names)

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