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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:help 499 g
Classification
  history:
Recommended:  CV3    [explanation]

This is 1 of 552 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
Writeuphelp
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 Fa7.7±7.1 (Fa0.2-23.8); n=19. Random measurements of low-Ca pyroxene grains revealed Fs1.9±0.7Wo0.9±0.7 (Fs1.1-2.8Wo0.1-2.5); 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 Meteoritical Bulletin, no. 110, in preparation (2021)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7579 approved meteorites from (Northwest Africa) (plus 1969 unapproved names)

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