Meteoritical Bulletin: Entry for Northwest Africa 8456

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Northwest Africa 8456

Basic information

Name: Northwest Africa 8456
This is an OFFICIAL meteorite name.
Abbreviation: NWA 8456
Observed fall: No
Year found: 2014
Country: (Northwest Africa)
Mass: 707 g

Classification
history:

Meteoritical Bulletin:	MB 103	(2014)	Lodranite
Recommended:			Lodranite [explanation]

This is 1 of 93 approved meteorites classified as Lodranite. [show all]
Search for other: Acapulcoite-lodranite family, Lodranites, and Primitive achondrites

Comments:

Approved 23 Jun 2014

Writeup

help

Writeup from MB 103:

Northwest Africa 8456 (NWA 8456)

(Northwest Africa)

Purchased: 2014

Classification: Primitive achondrite (Lodranite)

History: Purchased from a Moroccan meteorite dealer in 2014.

Physical characteristics: Single stone, some weathered fusion crust, irregular exterior with desert patina, iron-oxide staining. Saw cut reveals a coarsely crystalline texture with green, white, and brown silicate crystals, and metal/sulfide rich domains.

Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows this specimen to be a brecciated lodranite composed of mm-sized olivine and pyroxene clasts, with smaller fragments (100-300 μm) in cataclastic zones. Many Fe-Ni metal domains, with some up to 1 mm. Accessory phosphate, chromite, and troilite.

Geochemistry: (C. Agee and N. Muttik). Olivine Fa_11.8±0.2, Fe/Mn=25±1, n=10; pigeonite Fs_11.7±1.8Wo_5.5±4.5, Fe/Mn=17±2, n=9; augite Fs_6.5±1.8Wo_39.9±6.4, Fe/Mn=14±4, n=9.

Classification: Primitive achondrite (lodranite) possibly paired with NWA 8118, NWA 8216, NWA 8251.

Specimens: 22.0 g, including a probe mount is on deposit at UNM. Jay Piatek holds the main mass.

Data from:
  MB103
  Table 0
  Line 0:

Place of purchase:	Morocco
Date:	P 2014
Mass (g):	707
Pieces:	1
Class:	Lodranite
Classifier:	C. Agee, UNM
Type spec mass (g):	22
Type spec location:	UNM
Main mass:	J. Piatek
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. 103, MAPS 52, 1014, May 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12888/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
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