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Northwest Africa 697
Basic information Name: Northwest Africa 697
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 697
Observed fall: No
Year found: 2000
Country: (Northwest Africa)
Mass:help 686 g
Classification
  history:
Meteoritical Bulletin:  MB 103  (2014)  H6
Recommended:  H6    [explanation]

This is 1 of 6354 approved meteorites (plus 5 unapproved names) classified as H6.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 15 Feb 2014
Writeuphelp
Writeup from MB 103:

Northwest Africa 697 (NWA 697)

(Northwest Africa)

Purchased: 2000

Classification: Ordinary chondrite (H6)

History: One stone weighing 686 g was found in Morocco in 2000. Thomas Webb acquired the sample from Michael Cottingham in 2000.

Physical characteristics: Stone is dark brown in color and has a flattened oblate shape. The sample lacks fusion crust, but shows shallow regmaglypts.

Petrography: Description and classification (A. Love, App): Sample displays recrystallized chondritic texture composed of indistinct, chondrules and fragments in a recrystallized matrix. Sample contains minimally weathered Fe-Ni and FeS metal occurring as discrete grains.in a recrystallized matrix.

Geochemistry: (A. Love, App) Olivine Fa18.7±0.4, N=14; low Ca pyroxene Fs17.6±0.3Wo2.1±0.9, N=12.

Classification: Ordinary chondrite (H6 S3 W2)

Specimens: 20.05 g and 1 polished thin section are on deposit at App

Data from:
  MB103
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2000
Mass (g):686
Pieces:1
Class:H6
Shock stage:S3
Weathering grade:W2
Fayalite (mol%):18.7±0.4
Ferrosilite (mol%):17.6±0.3
Wollastonite (mol%):2.1±0.9
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 8138 approved meteorites from (Northwest Africa) (plus 1941 unapproved names)

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