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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 364 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
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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
bphd      
Charley Kettel   
DCOM   
Michael S. Scherman   
Mirko Graul   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6592 approved meteorites from (Northwest Africa) (plus 2020 unapproved names)

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