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Northwest Africa 7730
Basic information Name: Northwest Africa 7730
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7730
Observed fall: No
Year found: 2012
Country: Morocco
Mass:help 373 g
Classification
  history:
Meteoritical Bulletin:  MB 102  (2013)  LL3.4
Recommended:  LL3.4    [explanation]

This is 1 of 24 approved meteorites classified as LL3.4.   [show all]
Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 6 Mar 2013
Writeuphelp
Writeup from MB 102:

Northwest Africa 7730 (NWA 7730)

Morocco

Purchased: 2012

Classification: Ordinary chondrite (LL3.4)

History: Purchased by Adam Bates from a meteorite dealer in Morocco, August 2012.

Physical characteristics: Single stone, smooth dark fusion crust. A saw-cut reveals many densely packed chondrules of variable size, many ~3 mm, several up to ~5 mm, sparse fine-grained metal/sulfide.

Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows numerous unequilibrated chondrules, average size ~1 mm.

Geochemistry: (C. Agee and L. Burkemper, UNM) Olivine Fa23.0±9.4, Fe/Mn=55±18, Cr2O3=0.12±0.14 wt%, n=33; low-Ca pyroxene Fs14.4±9.1Wo1.0±1.4, Fe/Mn=28±16, n=39.

Classification: Ordinary chondrite (LL3.4), mean Fa,Fs-content and sigma consistent with type 3.4, weathering grade W1.

Specimens: 21 g including a probe mount on deposit at UNM, Adam Bates holds the main mass.

Data from:
  MB102
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2012
Mass (g):373
Pieces:1
Class:LL3.4
Weathering grade:W1
Fayalite (mol%):23.0±9.4
Ferrosilite (mol%):14.4±9.1
Wollastonite (mol%):1.0±1.4
Classifier:C. Agee, UNM
Type spec mass (g):21
Type spec location:UNM
Main mass:Adam Bates
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:
Find references in Google Scholar:
Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1972 approved meteorites from Morocco (plus 37 unapproved names) (plus 1 impact crater)

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