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Northwest Africa 11904
Basic information Name: Northwest Africa 11904
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11904
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass:help 4 kg
Classification
  history:
Recommended:  CV3    [explanation]

This is 1 of 464 approved meteorites classified as CV3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CV chondrites, and CV-CK clan chondrites
Comments: Approved 31 Aug 2018
Writeuphelp
Writeup from MB 107:

Northwest Africa 11904 (NWA 11904)

(Northwest Africa)

Purchased: 2018

Classification: Carbonaceous chondrite (CV3)

History: Purchased by Abdelhadi Aithiba in Morocco in 2018.

Physical characteristics: Single stone, dark, weathered, irregular exterior, distinct chondrules up to ~3 mm and scattered CAIs are visible on the surface; the matrix is dark gray in color.

Petrography: (C. Agee, UNM) Microprobe examination of a polished mount many irregular shaped porphryritic chondrules, some AOAs observed, fine-grained matrix makes up about ~50% of this meteorite.

Geochemistry: (C. Agee, UNM) Olivine Fa2.8±2.7, range Fa0.5-11.9, Cr2O3=0.25±0.14 (wt%), CaO=0.27±0.13 (wt%), n=22; low-Ca pyroxene Fs4.5±7.7Wo1.2±0.5, n=6. Oxygen isotopes (K. Ziegler, UNM): 3 analyses, with δ17O = -2.359, -2.108, -0.349 and δ18O = 2.317, 2.000, 4.233 (linearized values).

Classification: Carbonaceous chondrite (CV3)

Specimens: 20.66 g including a probe mount on deposit at UNM, Abdelhadi Aithiba holds the main mass.

Data from:
  MB107
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2018
Mass (g):4000
Pieces:1
Class:CV3
Shock stage:low
Weathering grade:moderate
Fayalite (mol%):2.8±2.7
Ferrosilite (mol%):4.5±7.7
Wollastonite (mol%):1.2±0.5
Classifier:C. Agee, UNM
Type spec mass (g):20.66
Type spec location:UNM
Main mass:Abdelhadi Aithiba
Comments:Field name AB-73; submitted by C. Agee, UNM
Plots: O isotopes:  
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)
Catalogs:
References: Published in Meteoritical Bulletin, no. 107, in preparation (2018)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6505 approved meteorites from (Northwest Africa) (plus 2021 unapproved names)

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