Meteoritical Bulletin: Entry for Northwest Africa 8161

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Northwest Africa 8161

Basic information

Name: Northwest Africa 8161
This is an OFFICIAL meteorite name.
Abbreviation: NWA 8161
Observed fall: No
Year found: 2013
Country: Morocco
Mass: 216 g

Classification
history:

Meteoritical Bulletin:	MB 102	(2013)	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 23 Dec 2013

Writeup

help

Writeup from MB 102:

Northwest Africa 8161 (NWA 8161)

Morocco

Purchased: 2013

Classification: Martian meteorite (Shergottite)

History: Purchased by Aziz Habibi in Morocco, 2013.

Physical characteristics: Several fragments that fit together to form a nearly complete stone. Shiny black crust, broken surface reveals polycrystalline texture with millimeter-sized grains

Petrography: (C. Agee, UNM) Microprobe examination of a polished epoxy mount shows ~40% olivine, ~40% pyroxene, ~10% maskelynite, ubiquitous Cr-Ti-Fe oxides; sulfide present. Pyroxenes and olivines are heavily shocked, grain size ranges from 200-2000 μm.

Geochemistry: (C. Agee and N. Muttik, UNM) EMPA. Olivine Fa_40.1±3.7, Fe/Mn=52±1, n=12; pigeonite Fs_28.6±2.7Wo_9.7±2.7, Fe/Mn=30±1, n=23; augite Fs_19.4±1.9Wo_32.0±4.4, Fe/Mn=27±1, n=9; maskelynite Or_2.3±0.4Ab_47.2±3.0An_50.5±3.2, n=8.

Classification: Martian meteorite (shergottite, poikilitic)

Specimens: 20.5 g including microprobe mount on deposit UNM, Aziz Habibi holds the main mass.

Data from:
  MB102
  Table 0
  Line 0:

Place of purchase:	Morocco
Date:	P 2013
Mass (g):	216
Pieces:	Several
Class:	Martian (shergottite)
Classifier:	C. Agee, UNM
Type spec mass (g):	20.5
Type spec location:	UNM
Main mass:	Aziz Habibi
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. 102, MAPS 50, 1662, September 2015

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Geography:

Morocco

Morocco

Coordinates:

Unknown.

Statistics:
This is 1 of 2082 approved meteorites from Morocco (plus 31 unapproved names) (plus 1 impact crater)

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Revision
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