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 12 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 Meteoritical Bulletin, no. 110, in preparation (2021)

Find references in NASA ADS:
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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 7885 approved meteorites from (Northwest Africa) (plus 1958 unapproved names)

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