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Northwest Africa 14883
Basic information Name: Northwest Africa 14883
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14883
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 1001 g
Classification
  history:
Recommended:  R3    [explanation]

This is 1 of 63 approved meteorites classified as R3.   [show all]
Search for other: Rumuruti chondrites, Rumuruti chondrites (type 3)
Comments: Approved 25 May 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 14883 (NWA 14883)

(Northwest Africa)

Purchased: 2021 Jun

Classification: Rumuruti chondrite (R3)

History: Purchased by Jason Whitcomb in June 2021 from an Algerian dealer.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Separated, well-formed, relatively small chondrules (apparent diameter 300±80 µm, N = 23) are set in a fine-grained metal-free matrix (~35 vol.%). Both unequilibrated and equilibrated chondrules are present. Groundmasses of porphyritic chondrules contain both glass and sodic plagioclase. Accessory phases include pentlandite and troilite in composite sulfide assemblages. Glass and sodic plagioclase are present in porphyritic chondrules.

Geochemistry: Olivine (Fa27.4±13.2, range Fa7.6-40.7, N = 6), low-Ca pyroxene (Fs14.4±13.7Wo1.3±1.8, range Fs2.4-33.0Wo0.3-3.9, N = 4), subcalcic augite (Fs15.6Wo24.8; Fs8.3Wo30.1; N = 2).

Classification: R3 chondrite.

Specimens: 34.6 g in the form of a polished endcut at PSF; remainder with Mr. J. Whitcomb.

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Algeria
Date:P 2021 Jun
Mass (g):1001
Pieces:many
Class:R3
Shock stage:low
Weathering grade:low
Fayalite (mol%):27.4±13.2
Ferrosilite (mol%):14.4±13.7
Wollastonite (mol%):1.3±1.8
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):34.6
Type spec location:PSF
Main mass:J. Whitcomb
Comments:Work name JW-70; 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)
WUSL: Washington Univ., One Brookings Drive, St. Louis, MO 63130, United States (institutional address; updated 17 Oct 2011)
Catalogs:
References: Published in Meteoritical Bulletin, no. 111, in preparation (2022)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8745 approved meteorites from (Northwest Africa) (plus 1880 unapproved names)

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