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Northwest Africa 7328
Basic information Name: Northwest Africa 7328
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7328
Observed fall: No
Year found: 2012
Country: Morocco
Mass:help 493 g
Classification
  history:
Meteoritical Bulletin:  MB 101  (2012)  H4
Recommended:  H4    [explanation]

This is 1 of 5794 approved meteorites (plus 2 unapproved names) classified as H4.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 5 Jul 2012
Writeuphelp
Writeup from MB 101:

Northwest Africa 7328 (NWA 7328)

Morocco

Purchased: May 2012

Classification: Ordinary chondrite (H4)

History: Purchased by Sean Tutorow in Morocco, May 2012.

Physical characteristics: One complete stone, dark reddish brown exterior, saw cut reveals numerous small chondrules and abundant fine-grained metal set in a brown matrix.

Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows a wide range of chondrule sizes and types, 50-1500 μm, BO, POP, PO, making up approximately 75% of the meteorite. Glass and mesostasis in chondrules, ubiquitous troilite and kamacite, some oxidized metal, no plagioclase.

Geochemistry: (C. Agee and N. Wilson, UNM) Olivine Fa18.2±0.6, Fe/Mn=39±3, n=23; low-Ca pyroxene Fs14.8±6.5Wo0.8±0.5, Fe/Mn=33±17, n=19; clinopyroxene Fs18.9±6.1Wo9.7±7.2, Fe/Mn=17±6, n=7.

Classification: Ordinary chondrite (H4), weathering grade W2.

Specimens: 27 g including a probe mount on deposit at UNM, Sean Tutorow holds the main mass.

Data from:
  MB101
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P May 2012
Mass (g):493.18
Pieces:1
Class:H4
Weathering grade:W2
Fayalite (mol%):18.2±0.6
Ferrosilite (mol%):14.8±6.5
Wollastonite (mol%):0.8±0.5
Classifier:C. Agee, UNM
Type spec mass (g):27
Type spec location:UNM
Main mass:Sean Tutorow
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 1438 approved meteorites from Morocco (plus 16 unapproved names) (plus 1 impact crater)

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