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Northwest Africa 8548
Basic information Name: Northwest Africa 8548
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8548
Observed fall: No
Year found: 2013
Country: (Northwest Africa)
Mass:help 245 g
Classification
  history:
Meteoritical Bulletin:  MB 103  (2014)  Achondrite-prim
Recommended:  Achondrite-prim    [explanation]

This is 1 of 14 approved meteorites classified as Achondrite-prim.   [show all]
Search for other: Primitive achondrites
Comments: Approved 18 Oct 2014
Writeuphelp
Writeup from MB 103:

Northwest Africa 8548 (NWA 8548)

(Northwest Africa)

Purchased: 2013

Classification: Primitive achondrite

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

Physical characteristics: Single stone, partially black fusion-crusted, dark green exterior patina. Saw cut reveals fine grained metal/sulfide set in a gray crystalline silicate groundmass.

Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows ~60% olivine and ~40% pyroxene forming a recrystallized porphyroblastic to poikiloblastic texture, some domains are clastic to brecciated, some domains look like relict chondrules, minor plagioclase grains ~20 μm, FeNi metal, sulfide, and chromite throughout.

Geochemistry: (C. Agee and N. Muttik, UNM) Olivine Fa38.0±0.4, Fe/Mn=95±5, n=8; low-Ca pyroxene Fs30.2±0.2Wo3.4±0.1, Fe/Mn=59±2, n=10; plagioclase An50.3±1.3Ab48.4±1.6Or1.3±0.3, n=5.

Classification: Primitive achondrite (ungrouped), probably paired with NWA 6901, NWA 3250, and NWA 2994.

Specimens: 20.6 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):244.81
Pieces:1
Class:Achondrite-prim
Weathering grade:low
Fayalite (mol%):38.0
Ferrosilite (mol%):30.2
Wollastonite (mol%):3.4
Classifier:C. Agee, UNM
Type spec mass (g):20.6
Type spec location:UNM
Main mass:Sean Tutorow
Comments:Field name G534; 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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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Denis gourgues   
John Tanner   
Predrag Radovic   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7374 approved meteorites from (Northwest Africa) (plus 1957 unapproved names)

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