Meteoritical Bulletin: Entry for Northwest Africa 11810

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Northwest Africa 11810

Basic information

Name: Northwest Africa 11810
This is an OFFICIAL meteorite name.
Abbreviation: NWA 11810
Observed fall: No
Year found: 2005
Country: (Northwest Africa)
Mass: 21 g

Classification
history:

Meteoritical Bulletin:	MB 107	(2018)	H3
Recommended:			H3 [explanation]

This is 1 of 710 approved meteorites (plus 2 unapproved names) classified as H3. [show all]
Search for other: H chondrites, H chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)

Comments:

Approved 11 May 2018

Writeup

help

Writeup from MB 107:

Northwest Africa 11810 (NWA 11810)

(Northwest Africa)

Purchased: 2005

Classification: Ordinary chondrite (H3)

History: Purchased by an anonymous collector from a dealer at the Munich Show in 2005, subsequently acquired by the Hollis Collection and donated to the Planetary Studies Foundation.

Petrography: (A. Irving and S. Kuehner, UWS) Closely packed chondrules (apparent diameter 400±160 µm, N = 20) are set in a sparse fine grained matrix containing merrillite, chlorapatite and stained metal. A single crystal clast of forsterite was observed.

Geochemistry: Olivine in chondrules (Fa_2.0-37.0Cr₂O₃ in ferroan examples 0.03-0.21 wt.%, mean 0.08±0.07 wt.%, N = 7), fosterite crystal (Fa_0.7), orthopyroxene (Fs_2.1-31.3Wo_0.6-1.7N = 3), pigeonite (Fs_0.4Wo_6.3), augite (Fs_3.2Wo_35.0; Fs_6.2Wo_45.5; N = 2). Magnetic susceptibility log χ (× 10^-9 m³/kg) = 5.14.

Classification: Ordinary chondrite (H3).

Specimens: The entire specimen including a polished endcut is at PSF.

Data from:
  MB107
  Table 0
  Line 0:

Place of purchase:	Munich
Date:	P 2005
Mass (g):	21
Pieces:	1
Class:	H3
Shock stage:	S2
Weathering grade:	W1
Fayalite (mol%):	2.0-37.0
Ferrosilite (mol%):	2.1-31.3
Wollastonite (mol%):	0.6-1.7
Magnetic suscept.:	5.14
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	21
Type spec location:	PSF
Main mass:	PSF
Comments:	CHC18020; submitted by A. Irving

Institutions
and collections

PSF: Planetary Studies Foundation,10 Winterwood Lane, Unit B, Galena, Illinois 61036-9283, United States; Website (institutional address; updated 1 Dec 2011)
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462

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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)

Also see:

This lists the most popular meteorites among people who looked up this meteorite.

Revision
history:

This lists important revisions made to data for this record.

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