Meteoritical Bulletin: Entry for Northwest Africa 10834

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Northwest Africa 10834

Basic information

Name: Northwest Africa 10834
This is an OFFICIAL meteorite name.
Abbreviation: NWA 10834
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass: 71 g

Classification
history:

Meteoritical Bulletin:	MB 105	(2016)	CM1/2
Recommended:			CM1/2 [explanation]

This is 1 of 26 approved meteorites classified as CM1/2. [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 1), CM chondrites, and CM-CO clan chondrites

Comments:

Approved 22 Oct 2016

Writeup

help

Writeup from MB 105:

Northwest Africa 10834 (NWA 10834)

(Northwest Africa)

Purchased: 2016 July

Classification: Carbonaceous chondrite (CM1/2)

History: Purchased by Darryl Pitt in July 2016 from Aziz Habibi in Agadir, Morocco.

Petrography: (A. Irving and S. Kuehner, UWS) Very small (apparent diameter 150±50 μm), mostly serpentinized chondrules (some with remnant forsteritic olivine grain cores) and tiny mafic silicate mineral grains occur within a very dark matrix containing irregular shrinkage cracks. Other phases identified include pyrrhotite, Ni-bearing pyrrhotite, pentlandite, Ni-poor kamacite and Mn-Fe-bearing dolomite.

Geochemistry: Olivine (Fa_0.5-0.6, N = 3). Oxygen isotopes (K. Ziegler, UNM): analysis of a clean sample (unwashed, not pre-fluorinated) by laser fluorination gave, respectively, δ¹⁷O = 3.282; δ¹⁸O = 10.797; Δ¹⁷O = -2.419 per mil.

Classification: Carbonaceous chondrite (CM1/2).

Specimens: 14.9 g including one polished thin section and one polished thick section at UWB; remainder with DPitt.

Data from:
  MB105
  Table 0
  Line 0:

Place of purchase:	Agadir
Date:	P 2016 July
Mass (g):	71
Pieces:	2
Class:	CM1/2
Shock stage:	low
Weathering grade:	low
Fayalite (mol%):	0.5-0.6
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	14.9
Type spec location:	UWB
Main mass:	D. Pitt
Comments:	AH210; submitted by A. Irving

Plots:

O isotopes:

Institutions
and collections

UNM: Institute of Meteoritics MSC03 2050 University of New Mexico Albuquerque NM 87131-1126 USA, United States; Website (institutional address; updated 12 Feb 2015)
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
DPitt: Darryl Pitt, 225 West 83rd Street, New York, NY 10024, United States; Website (private address)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full

Find references in NASA ADS:
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Geography:

Coordinates:

Unknown.

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

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