Meteoritical Bulletin: Entry for Northwest Africa 13766

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Northwest Africa 13766

Basic information

Name: Northwest Africa 13766
This is an OFFICIAL meteorite name.
Abbreviation: NWA 13766
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass: 33 g

Classification
history:

Recommended:

CVred3 [explanation]

This is 1 of 21 approved meteorites classified as CVred3. [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CV chondrites, and CV-CK clan chondrites

Comments:

Approved 8 Apr 2021

Writeup

Writeup from MB 110:

Northwest Africa 13766 (NWA 13766)

(Northwest Africa)

Purchased: 2016

Classification: Carbonaceous chondrite (CVred3)

History: The meteorite was initially purchased from a dealer in Rissani, Morocco, and subsequently bought by the main mass holder.

Physical characteristics: Dark grayish individual partly covered by fusion crust.

Petrography: Carbonaceous chondrite composed of large chondrules (mean diameter about 0.9 mm; up to 3 mm sized), CAIs (up to 6 mm sized), and olivine amoeboids all set into a fine-grained almost black matrix. Several chondrules show brownish staining due to terrestrial alteration. Opaque phases are metal often occurring as blebs in chondrules, sulfides and their respective alteration products.

Geochemistry: Ni in sulfides <0.55 wt%, N=11

Classification: Carbonaceous chondrite (CVred3). Reduced subgroup based on low concentrations of Ni in sulfides.

Data from:
  MB110
  Table 0
  Line 0:

Place of purchase:	Rissani, Morocco
Date:	P 2016
Mass (g):	33
Pieces:	1
Class:	CVred3
Shock stage:	S2
Weathering grade:	low
Fayalite (mol%):	5.9±3.7 (1.2-13.6, n=10)
Ferrosilite (mol%):	1.4±0.3 (1.0-1.7, n=7)
Wollastonite (mol%):	2.3±1.4 (1.0-4.2, n=7)
Classifier:	A. Greshake, MNB
Type spec mass (g):	8.1
Type spec location:	MNB
Main mass:	Dirk Lorenzen
Comments:	Submitted by Ansgar Greshake

Institutions
and collections

MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)

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 8904 approved meteorites from (Northwest Africa) (plus 1871 unapproved names)

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