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Northwest Africa 14845
Basic information Name: Northwest Africa 14845
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14845
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 24.8 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 14845 (NWA 14845)

(Northwest Africa)

Purchased: 2021 Sep

Classification: Rumuruti chondrite (R3)

History: Purchased by Juan Poblador in September 2021 from a Moroccan dealer.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Discrete unequilibrated, sulfide-bearing chondrules and related lithic chondrite clasts occur within a fresh, fine-grained matrix (overall ~10 vol.%) containing troilite, pentlandite and sodic plagioclase. Lithic clasts contain separated unequilibrated chondrules (apparent diameter 550±390 µm, N = 26) and 20-25 vol.% sulfide-bearing matrix. A sub-micrometer Pt inclusion was identified in one pentlandite grain.

Geochemistry: Olivine (Fa34.0±8.8, range Fa22.3-43.9, N = 6), low-Ca pyroxene (Fs10.6±8.8Wo1.5±1.4, range Fs3.4-20.4Wo0.4-3.1, N = 3), augite (Fs9.8±0.1Wo46.5±0.2, range Fs9.7-9.9Wo46.3-46.6, N = 2), plagioclase (Ab70.3An28.4Or1.3).

Classification: R3 chondrite breccia.

Specimens: 13.9 g including one polished mount at UWB; remainder with Mr. J. Poblador.

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2021 Sep
Mass (g):24.8
Pieces:several
Class:R3
Shock stage:S2
Weathering grade:low
Fayalite (mol%):34.0±8.8
Ferrosilite (mol%):10.6±8.8
Wollastonite (mol%):1.5±1.4
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):13.9
Type spec location:UWB
Main mass:J. Poblador
Comments:Work name JAP21-7; submitted by A. Irving
Institutions
   and collections
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)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
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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