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Northwest Africa 8552
Basic information Name: Northwest Africa 8552
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8552
Observed fall: No
Year found: 2013
Country: (Northwest Africa)
Mass:help 256 g
Classification
  history:
Meteoritical Bulletin:  MB 103  (2014)  EL6
Recommended:  EL6    [explanation]

This is 1 of 120 approved meteorites classified as EL6.   [show all]
Search for other: EL chondrites, Enstatite chondrites, Enstatite chondrites (type 4-7), and Enstatite-rich meteorites
Comments: Approved 18 Oct 2014
Writeuphelp
Writeup from MB 103:

Northwest Africa 8552 (NWA 8552)

(Northwest Africa)

Purchased: 2013

Classification: Enstatite chondrite (EL6)

History: Purchased by Brahim Tahiri from a Moroccan hunter and sent to his partner Sean Tutorow for classification, April, 2013.

Physical characteristics: Single stone. Weathered brown exterior. Saw cut reveals brown to light brown fine-grained matrix, many opaques visible.

Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows silicates: 90% enstatite and 10% plagioclase; no chondrules observed in the microprobe section, ubiquitous kamacite, taenite, Fe-oxide, Fe-sulfide, many Fe-oxide veinlets.

Geochemistry: (C. Agee and N. Muttik, UNM) Enstatite Fs0.2±0.1Wo1.7±0.2, n=14; plagioclase Ab81.2±1.2An15.1±1.3Or3.7±0.2, n=6; kamacite Si=1.3±0.1, Ni=5.4±0.8 (wt%), n=5.

Classification: Enstatite chondrite (EL6), weathering grade W2.

Specimens: 23.4 g including a probe mount on deposit at UNM, Sean Tutorow holds the main mass.

Data from:
  MB103
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2013
Mass (g):256.4
Pieces:1
Class:EL6
Weathering grade:W2
Ferrosilite (mol%):0.2
Classifier:C. Agee, UNM
Type spec mass (g):23.4
Type spec location:UNM
Main mass:Sean Tutorow
Comments:Field name G562; submitted by C. Agee, UNM
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 7320 approved meteorites from (Northwest Africa) (plus 1973 unapproved names)

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