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Northwest Africa 7333
Basic information Name: Northwest Africa 7333
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7333
Observed fall: No
Year found: 2011
Country: Morocco
Mass:help 88 g
Classification
  history:
Meteoritical Bulletin:  MB 101  (2012)  Ureilite
Recommended:  Ureilite    [explanation]

This is 1 of 515 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Comments: Approved 23 Aug 2012
Writeuphelp
Writeup from MB 101:

Northwest Africa 7333 (NWA 7333)

Morocco

Purchased: 2011

Classification: Ureilite

History: Purchased by Matt Morgan in Morocco, 2011.

Physical characteristics: Single stone with a dark brown, coarse granular exterior. Saw cut reveals a mosaic of black and brown grains and very fine veins of oxidized metal and graphite, some clasts up to several millimeters.

Petrography: (C. Agee, UNM) This meteorite consists of approximately 65% olivine and 30% pigeonite. Numerous Fe-metal veins occupy grain boundaries. Most of the veins have been oxidized by desert weathering. The metal veins are commonly haloed by tiny metal blebs grading into adjacent olivine and pyroxene crystals. Graphite is ubiquitous and exceptionally well preserved as elongate lenses up to 1 mm and along olivine and pyroxene grain boundaries. Minor sulfide present.

Geochemistry: (C. Agee and M. Spilde, UNM, by EPMA). Olivine Fa18.2±5.3, Fe/Mn=39±13, Cr2O3=0.56±0.21 wt%, n=13; pigeonite Fs11.3±3.9Wo11.2±7.5, Fe/Mn=20±10, Cr2O3=1.03±0.22 wt%, n=10; enstatite Fs0.9Wo1.0, n=1.

Classification: Achondrite (Ureilite)

Specimens: 18 g including a probe mount on deposit at UNM, Calvin Shipbaugh holds the main mass.

Data from:
  MB101
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2011
Mass (g):88
Pieces:1
Class:Ureilite
Fayalite (mol%):18.2±5.3
Ferrosilite (mol%):11.3±3.9
Wollastonite (mol%):11.2±7.5
Classifier:C. Agee, UNM
Type spec mass (g):18
Type spec location:UNM
Main mass:Calvin Shipbaugh
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. 101, MAPS 50, 1661, September 2015
Find references in NASA ADS:
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Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1407 approved meteorites from Morocco (plus 16 unapproved names) (plus 1 impact crater)

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