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Northwest Africa 7252
Basic information Name: Northwest Africa 7252
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7252
Observed fall: No
Year found: 2007
Country: Morocco
Mass:help 276 g
Classification
  history:
Meteoritical Bulletin:  MB 100  (2012)  CK5
Recommended:  CK5    [explanation]

This is 1 of 169 approved meteorites classified as CK5.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (equilibrated), CK chondrites, CK chondrites (type 4-6), and CV-CK clan chondrites
Comments: Approved 20 Apr 2012
Writeuphelp
Writeup from MB 100:

Northwest Africa 7252 (NWA 7252)

Morocco

Purchased: 2007

Classification: Carbonaceous chondrite (CK5)

History: Purchased by B. Reed in Tucson, 2007.

Physical characteristics: Single stone, dark weathered fusion crust, interior shows dark brown matrix with sparse chondrules.

Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows primarily fine-grained texture with olivine, plagioclase, pyroxene, magnetite, iron oxidation from weathering, and a few chondrules to 1 mm.

Geochemistry: (C. Agee and N. Wilson, UNM) Olivine Fa27.3±0.6, Fe/Mn=105±8, n=17; low-Ca pyroxene Fs24.8±1.6Wo0.8±0.3, Fe/Mn=69±14, n=3, plagioclase Or2±1Ab46±8An52±8, n=11.

Classification: Carbonaceous chondrite (CK5). Fe/Mn, Fs, Fa consistent with CK chondrite. Plagioclase, high An content (An52) consistent with CK; high An content and high Fe/Mn rule out LL.

Specimens: 22 g including a probe mount on deposit at UNM; Reed holds the main mass.

Data from:
  MB100
  Table 1
  Line 1695:
Place of purchase:Tucson
Date:P 2007
Mass (g):276
Pieces:1
Class:CK5
Fayalite (mol%):27.3±0.6
Ferrosilite (mol%):24.8±1.6
Wollastonite (mol%):0.8±0.3
Classifier:C. Agee, UNM
Type spec mass (g):22
Type spec location:UNM
Main mass:Reed
Comments:Submitted by C. Agee
Institutions
   and collections
UNM: Institute of Meteoritics MSC03 2050 University of New Mexico Albuquerque NM 87131-1126 USA, United States; Website (institutional address; updated 12 Feb 2015)
Reed: Blaine Reed, P.O. Box 1141, Delta, CO 81416, United States; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 100, MAPS 49, E1-E101 (2014)
Find references in NASA ADS:
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Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1526 approved meteorites from Morocco (plus 22 unapproved names) (plus 1 impact crater)

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