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Northwest Africa 4295
Basic information Name: Northwest Africa 4295
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 4295
Observed fall: No
Year found: 2006
Country: Morocco
Mass:help 312 g
Classification
  history:
Recommended:  EL-melt rock    [explanation]

This is 1 of 24 approved meteorites classified as EL-melt rock.   [show all]
Search for other: EL chondrites, Enstatite chondrites, Enstatite chondrites (type 4-7), Enstatite-rich meteorites, and Melted chondrites
Comments: Approved 29 Feb 2020
Writeuphelp
Writeup from MB 109:

Northwest Africa 4295 (NWA 4295)

Morocco

Purchased: 2006 Mar

Classification: Enstatite chondrite (EL melt rock)

History: Purchased by Adam Hupe in March 2006 from a dealer in Erfoud, Morocco. A small specimen was sold to PSF in 2007.

Physical characteristics: Five similar stones (total weight 312 g) consisting of aggregates of small whitish grains crosscut by distinctive thin compression fractures filled with terrestrial limonite.

Petrography: (A. Irving, UWS & J. Boesenberg, BrownU) All five stones were examined petrographically. They are fine grained aggregates of predominantly enstatite (mostly as prismatic grains) with accessory sodic plagioclase, iron hydroxides (after primary metal), troilite, daubreelite and schreibersite. No fresh metal was found in the studied thin sections. Rare but clearly defined, spherical RP chondrules are present, and there are subparallel veinlets of secondary iron hydroxides and some calcite.

Geochemistry: Enstatite (Fs0.5±0.2Wo1.4±0.0 (range Fs0.3-0.8Wo1.4, N = 6), plagioclase (Ab80.5-81.8An15.6-14.2Or4.0-3.4, N = 5).

Classification: EL3-melt rock. Paired with Al Haggounia 001 and related material.

Specimens: 20.5 g including one polished thin section at UWB; 9.04 g at PSF; remainder with AHupé.

Data from:
  MB109
  Table 0
  Line 0:
Place of purchase:Erfoud
Date:P 2006 Mar
Mass (g):312
Pieces:5
Class:EL-melt rock
Shock stage:high
Weathering grade:W5
Ferrosilite (mol%):0.5±0.2
Wollastonite (mol%):1.4±0.0
Classifier:A. Irving, UWS, and J. Boesenberg, BrownU
Type spec mass (g):29.5
Type spec location:20.5 g UWB, 9.04 g PSF
Main mass:A. Hupe
Comments:Work names NQ6, NQ18, NQ22, NQ24 and NQ26; submitted by A. Irving
Institutions
   and collections		 PSF: Planetary Studies Foundation,10 Winterwood Lane, Unit B, Galena, Illinois 61036-9283, United States; Website (institutional address; updated 1 Dec 2011)
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
Hupe: (old address—now see GHupé or AHupé) G. and A. Hupe, 2616 Lake Youngs Court SE, Renton, WA 98058., United States (private address)
BrownU: Brown University Providence, RI 02912, United States (institutional address; updated 7 Sep 2019)
Catalogs:
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
Find references in NASA ADS:
Find references in Google Scholar:
Photos:
CreditPhotos
Photos from the Encyclopedia of Meteorites:
Don Edwards   
The Hupe Collection   
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Anthony James   
METEORITICON      
Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1973 approved meteorites from Morocco (plus 37 unapproved names) (plus 1 impact crater)

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