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Northwest Africa 596
Basic information Name: Northwest Africa 596
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 596
Observed fall: No
Year found: 2000
Country: (Northwest Africa)
Mass:help 136 g
Classification
  history:
Meteoritical Bulletin:  MB 103  (2014)  H5
Recommended:  H5    [explanation]

This is 1 of 11567 approved meteorites (plus 23 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 8 Aug 2014
Writeuphelp
Writeup from MB 103:

Northwest Africa 596 (NWA 596)

(Northwest Africa)

Purchased: 2000

Classification: Ordinary chondrite (H5)

History: One subrounded stone containing desert patina and weighing 136 g was found and sold to Michael Cottingham in Morocco. Thomas Webb acquired the sample in November, 2000.

Physical characteristics: The stone is orange and has an angular to subrounded shape. There is no relict fusion crust remaining on the exterior. The cut face of the interior of the stone is mottled tan and dark orange and shows unweathered flakes of metal.

Petrography: Description and classification (A. Love, App): Sample displays recrystallized chondritic texture composed of relict, well-defined chondrules and fragments with an average diameter of 495 μm (72-1787 μm) set within a crystalline matrix. Sample is crosscut by subparallel fractures. Some chondrules are deformed into elongate shapes and share a weak orientation subparallel to fracture sets.

Geochemistry: (A.Love, App) Fa18.6±0.2, n=20; low Ca pyroxene Fs16.5±0.2Wo1.9±0.6, n=12.

Classification: Ordinary Chondrite (H5, S2, W2)

Specimens: 20.05 g and 2 polished thin sections are on deposit at App.

Data from:
  MB103
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2000
Mass (g):136
Pieces:1
Class:H5
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):18.6±0.2, N=20
Ferrosilite (mol%):16.5±0.2, N=12
Wollastonite (mol%):1.9±0.6
Classifier:A. Love, App
Type spec mass (g):20.05
Type spec location:App
Main mass:TWebb
Finder:Anonymous
Comments:Submitted by Anthony Love
Institutions
   and collections		 App: Department of Geology, 572 Rivers St., Appalachian State University, Boone, NC 28608, United States (institutional address; updated 7 Mar 2013)
TWebb: No contact information provided., United States (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 103, MAPS 52, 1014, May 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12888/full
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)
Also see:
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Revision
  history:
  This lists important revisions made to data for this record.

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