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Northwest Africa 8716
Basic information Name: Northwest Africa 8716
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8716
Observed fall: No
Year found: 2014
Country: Morocco
Mass:help 168 g
Classification
  history:
Meteoritical Bulletin:  MB 104  (2015)  Martian (shergottite)
Recommended:  Martian (shergottite)    [explanation]

This is 1 of 197 approved meteorites (plus 1 unapproved name) classified as Martian (shergottite).   [show all]
Search for other: Martian meteorites
Comments: Approved 16 Jan 2015
Writeuphelp
Writeup from MB 104:

Northwest Africa 8716 (NWA 8716)

Morocco

Purchased: Dec 2014

Classification: Martian meteorite (Shergottite)

Petrography: Olivine macrocrysts (up to 1.8 mm) and microphenocrysts (up to 420 μm) are set in a fine groundmass of patchily zoned pyroxene, maskelynite, chromite, troilite. Large olivine macrocrysts and some microphenocrysts show zoning with ferroan rims and magnesium cores. Other olivine microphenocrysts are relatively homogeneous and have higher Fe contents. Tiny chromite inclusions and melt inclusions are observed within olivine grains.

Geochemistry: Olivine (cores of large macrocryst Fa16.9-22.1, rims Fa32.4-36.2, microphenocrysts Fa41.7-47.8) Fe/Mn=45.1-64.2; orthopyroxene (Fs18.2-21.4Wo2.2-4.4), pigeonite (Fs25-35.8Wo6.7-16.3), Fe/Mn=28.4-38.8; maskelynite (An58.7-65.7Ab40.7-34.1)

Specimens: Olivine-phyric shergottite

Data from:
  MB104
  Table 0
  Line 0:
Place of purchase:Ouarzazate
Date:P Dec 2014
Mass (g):168
Pieces:1
Class:Martian (shergottite)
Shock stage:high
Fayalite (mol%):34.4±9.2 (n=40)
Ferrosilite (mol%):29.0±4.0 (n=22); 19.2±1.3 (n=6)
Wollastonite (mol%):10.8±2.4 (n=22); 3.2±1.1 (n=6)
Classifier:Wu Y., PMO
Type spec mass (g):20
Type spec location:PMO
Main mass:Ke Zuokai
Comments:Submitted by Hsu W.
Institutions
   and collections
PMO: Purple Mountain Observatory, Nanjing, China (institutional address; updated 16 Dec 2011)
Catalogs:
References: Published in Meteoritical Bulletin, no. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full
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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
John Tanner   
Solar Anamnesis   
Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1406 approved meteorites from Morocco (plus 16 unapproved names) (plus 1 impact crater)

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