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Northwest Africa 6000
Basic information Name: Northwest Africa 6000
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 6000
Observed fall: No
Year found: 2009
Country: (Northwest Africa)
Mass:help 308 g
Classification
  history:
Meteoritical Bulletin:  MB 105  (2016)  Howardite
Recommended:  Howardite    [explanation]

This is 1 of 427 approved meteorites classified as Howardite.   [show all]
Search for other: Achondrites, HED achondrites, and Howardites
Comments: Approved 17 Dec 2016
Writeuphelp
Writeup from MB 105:

Northwest Africa 6000 (NWA 6000)

(Northwest Africa)

Purchased: 2009 Aug

Classification: HED achondrite (Howardite)

History: Purchased from a mineral dealer in Erfoud, Morocco

Petrography: (K. Metzler, IfP) Fine-grained breccia, consisting of mm-sized clasts of equilibrated and unequilibrated basalt (subophitic and ophitic texture) and diogenitic pyroxene, set in a fine-grained matrix of related debris. The diogenite component is unevenly distributed (mean concentration about 15 vol%). Main accessories are ilmenite, chromite, and (mostly oxidized) metal.

Geochemistry: Eucritic lithologies: low-Ca pyroxene Fs44.7±13.0 (34-62; n=6); augite exsolution lamellae Fs27.1 (Fs26-28; n=2). Diogenitic pyroxene Fs25.9±3.0 (Fs22-31; n=7). Plagioclase variation An90.2±3.3 (An82.5-94.7; n=13)

Data from:
  MB105
  Table 0
  Line 0:
Place of purchase:Erfoud
Date:P 2009 Aug
Mass (g):308
Pieces:1
Class:Howardite
Shock stage:moderate
Weathering grade:moderate
Ferrosilite (mol%):25.9; 44.7; 27.1
Wollastonite (mol%):3.0; 2.7; 42.6
Classifier:K. Metzler, IfP
Type spec mass (g):20
Type spec location:IfP
Main mass:Mirko Graul, Bernau, Germany
Comments:Submitted by K. Metzler (IfP)
Institutions
   and collections
IfP: Institut für Planetologie, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany (institutional address; updated 23 Jan 2012)
Catalogs:
References: Published in Meteoritical Bulletin, no. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full
Find references in NASA ADS:
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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
bphd Photo added 20 Oct 2022
Photo added 20 Oct 2022
Charley Kettel Photo added 20 Oct 2022
Michael S. Scherman Photo added 20 Oct 2022
Mirko Graul   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8777 approved meteorites from (Northwest Africa) (plus 1879 unapproved names)

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