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Northwest Africa 7784
Basic information Name: Northwest Africa 7784
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7784
Observed fall: No
Year found: 2012
Country: Morocco
Mass:help 300 g
Classification
  history:
Meteoritical Bulletin:  MB 102  (2013)  H5
Recommended:  H5    [explanation]

This is 1 of 9995 approved meteorites (plus 16 unapproved names) classified as H5.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 3 Apr 2013
Writeuphelp
Writeup from MB 102:

Northwest Africa 7784 (NWA 7784)

Morocco

Purchased: 2012

Classification: Ordinary chondrite (H5)

History: Purchased by Sean Tutorow from a Moroccan meteorite dealer in 2012.

Physical characteristics: Single stone, fresh fusion crust, saw cut reveals numerous small metal grains set in a light-gray matrix, some metal clusters up to 3 mm.

Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows equilibrated PO, POP chondrules, plagioclase up to 100 μm, phosphate.

Geochemistry: (C. Agee and L. Burkemper, UNM) Olivine Fa20.1±1.3, Fe/Mn=43±4, n=6; low-Ca pyroxene Fs17.5±1.4Wo1.4±0.2, Fe/Mn=24±2, n=6.

Classification: Ordinary chondrite (H5), weathering grade W1.

Specimens: 24.3 g including a probe mount on deposit at UNM, Sean Tutorow holds the main mass.

Data from:
  MB102
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2012
Mass (g):299.70
Pieces:1
Class:H5
Weathering grade:W1
Fayalite (mol%):20.1±1.3
Ferrosilite (mol%):17.5±1.4
Wollastonite (mol%):1.4±0.2
Classifier:C. Agee, UNM
Type spec mass (g):24.3
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. 102, MAPS 50, 1662, September 2015
Find references in NASA ADS:
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Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1459 approved meteorites from Morocco (plus 21 unapproved names) (plus 1 impact crater)

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