Meteoritical Bulletin: Entry for Northwest Africa 10262

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Northwest Africa 10262

Basic information

Name: Northwest Africa 10262
This is an OFFICIAL meteorite name.
Abbreviation: NWA 10262
Observed fall: No
Year found: 2015
Country: (Northwest Africa)
Mass: 389 g

Classification
history:

Meteoritical Bulletin:	MB 104	(2015)	Howardite
Recommended:			Howardite [explanation]

This is 1 of 451 approved meteorites classified as Howardite. [show all]
Search for other: Achondrites, HED achondrites, and Howardites

Comments:

Approved 8 Sep 2015

Writeup

help

Writeup from MB 104:

Northwest Africa 10262 (NWA 10262)

(Northwest Africa)

Purchased: 2015 Jun 25

Classification: HED achondrite (Howardite)

History: Purchased by Hans Fex from Ruben Garcia who acquired the meteorite from Morocco, 2015.

Physical characteristics: Single stone, no fusion crust. A cut surface shows a dark-gray interior with a few scattered white clasts.

Petrography: (C. Agee, UNM) This howardite consist of two main lithologies, an unequilibrated eucrite with zoned pyroxene (~50%), and a diogenite (~50%). Accessory phases include chromite, silica, and olivine.

Geochemistry: (C. Agee and N. Muttik, UNM) unequilibrated eucrite low-Ca pyroxene Fs_43.2±8.5Wo_6.0±5.4, Fe/Mn=30±3, n=4, augite Fs_18.9Wo_42.6, Fe/Mn=28, n=1; and minor olivine Fa_32.4n=1; diogenite low-Ca pyroxene Fs_24.7±3.7Wo_2.0±0.4, Fe/Mn=31±2, n=6; plagioclase An_86.9±1.6, n=4.

Classification: Howardite, ~50% eucrite, ~50% diogenite.

Specimens: 20.98 g including a probe mount on deposit at UNM, Hans Fex holds the main mass.

Data from:
  MB104
  Table 0
  Line 0:

Place of purchase:	Morocco
Date:	P 2015 Jun 25
Mass (g):	389
Pieces:	1
Class:	Howardite
Shock stage:	high
Weathering grade:	moderate
Fayalite (mol%):	32.4
Ferrosilite (mol%):	43.2±8.5, 24.7±3.7
Wollastonite (mol%):	6.0±5.4, 2.0±0.4
Classifier:	C. Agee, UNM
Type spec mass (g):	20.98
Type spec location:	UNM
Main mass:	Hans Fex
Comments:	Submitted by C. Agee

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)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full

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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9710 approved meteorites from (Northwest Africa) (plus 1853 unapproved names)

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Revision
history:

This lists important revisions made to data for this record.

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