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Northwest Africa 10462
Basic information Name: Northwest Africa 10462
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10462
Observed fall: No
Year found: 2014
Country: (Northwest Africa)
Mass:help 3.2 kg
Classification
  history:
Meteoritical Bulletin:  MB 105  (2016)  LL6-an
Recommended:  LL6-an    [explanation]

This is 1 of 3 approved meteorites classified as LL6-an.   [show all]
Search for other: LL chondrites, Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 31 Mar 2016
Writeuphelp
Writeup from MB 105:

Northwest Africa 10462 (NWA 10462)

(Northwest Africa)

Purchased: Dec 2014

Classification: Ordinary chondrite (LL6, anomalous)

History: Four identical appearing specimens were purchased by Zohir Fettouh in December 2014 in Guelmim from a local meteorite hunter who found them near Bir Anzarane, Morocco. Type specimen was provided by Steve Arnold.

Physical characteristics: Four stones with weathered exterior; saw cuts shows a gray fine-grained interior with some mild brecciation.

Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows some distinct chondrules, plagioclase up to 100 μm. No kamacite, but FeNiS phase + taenite, and chromite, iron sulfide and iron-nickel sulfide were observed.

Geochemistry: (C. Agee and N. Muttik, UNM) Olivine Fa33.8±0.4, Fe/Mn=70±2, n=6; low-Ca pyroxene Fs27.0±0.3Wo1.8±0.2, Fe/Mn=41±2, n=6.

Classification: Ordinary chondrite (LL6-an). Anomalous based on olivine Fa-content outside the range for LL-chondrites (Fa>33), similar to NWA 6588 (LL6-an with Fa33.3).

Specimens: 21 g including a probe mount on deposit at UNM, Zohir Fettouh holds the main mass.

Data from:
  MB105
  Table 0
  Line 0:
Place of purchase:Guelmim, Morocco
Date:P Dec 2014
Mass (g):3200
Pieces:4
Class:LL6-an
Shock stage:S3
Weathering grade:W2
Fayalite (mol%):33.8±0.4
Ferrosilite (mol%):27.0±0.3
Wollastonite (mol%):1.8±0.2
Classifier:C. Agee, UNM
Type spec mass (g):21
Type spec location:UNM
Main mass:Zohir Fettouh
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. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6900 approved meteorites from (Northwest Africa) (plus 2035 unapproved names)

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