Meteoritical Bulletin: Entry for Northwest Africa 11636

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Northwest Africa 11636

Basic information

Name: Northwest Africa 11636
This is an OFFICIAL meteorite name.
Abbreviation: NWA 11636
Observed fall: No
Year found: 2017
Country: (Northwest Africa)
Mass: 152.5 g

Classification
history:

Meteoritical Bulletin:	MB 107	(2018)	CK6
Recommended:			CK6 [explanation]

This is 1 of 80 approved meteorites classified as CK6. [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (equilibrated), CK chondrites, CK chondrites (type 4-6), and CV-CK clan chondrites

Comments:

Approved 20 Feb 2018

Writeup

Writeup from MB 107:

Northwest Africa 11636 (NWA 11636)

(Northwest Africa)

Purchased: 2017

Classification: Carbonaceous chondrite (CK6)

Physical characteristics: Sixteen small dark brownish individuals partly covered with fusion crust.

Petrography: The meteorite predominantly consists of fine-grained recrystallized matrix mainly composed of Ni-bearing ferrous olivine. Chondrules are only rarely encountered. Minor phases include intermediate plagioclase, low-Ca pyroxene, and troilite. Cr-rich magnetite is abundant; metal is virtually absent.

Geochemistry: Olivine: Fa_29.5±0.2, NiO=0.4±0.1, FeO/MnO=100±11, n=12; magnetite Cr₂O₃ is about 3.8 wt%.

Data from:
  MB107
  Table 0
  Line 0:

Place of purchase:	Morocco
Date:	P 2017
Mass (g):	152.5
Pieces:	16
Class:	CK6
Shock stage:	S1
Weathering grade:	W2
Fayalite (mol%):	29.5±0.2 (n=12)
Ferrosilite (mol%):	25.3±0.5 (n=3)
Wollastonite (mol%):	1.6±0.6 (n=3)
Classifier:	A. Greshake, MNB
Type spec mass (g):	20
Type spec location:	MNB
Main mass:	Vincent Gira
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. 107, MAPS 55, 460-462

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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9128 approved meteorites from (Northwest Africa) (plus 1873 unapproved names)

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