Meteoritical Bulletin: Entry for Northwest Africa 13327

header

MetSoc Home Publications Contacts

Search the Meteoritical Bulletin Database
Last update: 15 Apr 2024
Search for:	Search type:	Search limits:	Display:	Publication:
Names Text Places Classes Years	Contains Starts with Exact Sounds like	NonAntarctic Falls Non-NWAs Has strewnfield		What's new in the last:
Include past classifications in search		Has photo	Limit to approved meteorite names
Search text:

Northwest Africa 13327

Basic information

Name: Northwest Africa 13327
This is an OFFICIAL meteorite name.
Abbreviation: NWA 13327
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass: 346 g

Classification
history:

Meteoritical Bulletin:	MB 109	(2020)	Martian (shergottite)
Recommended:			Martian (shergottite) [explanation]

This is 1 of 321 approved meteorites (plus 2 unapproved names) classified as Martian (shergottite). [show all]
Search for other: Martian meteorites

Comments:

Approved 4 Jul 2020

Writeup

help

Writeup from MB 109:

Northwest Africa 13327 (NWA 13327)

(Northwest Africa)

Purchased: 2020 Feb

Classification: Martian meteorite (Shergottite)

History: Purchased by Eric Twelker in February 2020 from a Moroccan dealer at the Tucson Gem and Mineral Show.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Diabasic texture (mean grainsize ~0.8 mm). Composed predominantly of prismatic grains of zoned clinopyroxene and lath-like maskelynite together with accessory silica polymorph, merrillite, chlorapatite, Cr-Mn-bearing ulvöspinel, ilmenite, pyrrhotite and baddeleyite. Minor secondary calcite is present.

Geochemistry: Subcalcic augite (Fs_20.1-27.3Wo_29.1-35.4, FeO/MnO = 19-34 , N = 5), ferroan subcalcic augite rim (Fs_45.1Wo_30.7, FeO/MnO = 36), ferroan pigeonite rims (Fs_53.9-61.3Wo_13.4-15.7, FeO/MnO = 36-37, N = 3), maskelynite (An_53.4-55.7Or_1.4-0.9, N = 4).

Classification: Shergottite (diabasic).

Specimens: 20.5 g plus one polished thin section at UWB; remainder with Mr. E. Twelker.

Data from:
  MB109
  Table 0
  Line 0:

Place of purchase:	Tucson
Date:	P 2020 Feb
Mass (g):	346
Pieces:	1
Class:	Martian (shergottite)
Shock stage:	high
Weathering grade:	low
Ferrosilite (mol%):	20.1-27.3; 45.1; 53.9-61.3
Wollastonite (mol%):	29.1-33.0; 30.7; 13.4-15.7
Classifier:	A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):	20.5
Type spec location:	UWB
Main mass:	E. Twelker
Comments:	Work name ET20-1; submitted by A. Irving

Institutions
and collections

UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
WUSL: Washington Univ., One Brookings Drive, St. Louis, MO 63130, United States (institutional address; updated 17 Oct 2011)
UWB: University of Washington, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023)
Twelker: Eric Twelker, P.O. Box 844, Port Townsend, WA 98368, United States; Website (private address; updated 1 Dec 2014)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 109, in preparation (2020)

Find references in NASA ADS:
Find references in Google Scholar:

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.

Direct link to this page