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Northwest Africa 15265
Basic information Name: Northwest Africa 15265
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 15265
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 876 g
Recommended:  H4    [explanation]

This is 1 of 6459 approved meteorites (plus 2 unapproved names) classified as H4.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 14 Sep 2022
Writeup from MB 111:

Northwest Africa 15265 (NWA 15265)

(Northwest Africa)

Purchased: 2021 Oct

Classification: Ordinary chondrite (H4)

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

Petrography: (A. Irving, UWS and J. Boesenberg, BrownU) Well-formed equilibrated chondrules containing devitrified glass occur within a relatively coarse grained matrix containing altered kamacite, taenite, troilite, chromite, chlorapatite and merrillite, but no plagioclase.

Geochemistry: Olivine (Fa18.8±0.7, range Fa18.4-20.28, N = 6), low-Ca pyroxene (Fs16.4±0.3Wo1.4±0.1, range Fs16.1-16.7Wo1.2-1.6, N = 6)

Classification: Ordinary chondrite (H4).

Specimens: 25.1 g including one polished thick section at PSF; remainder with Mr. J. Whitcomb.

Data from:
  Table 0
  Line 0:
Place of purchase:Algeria
Date:P 2021 Oct
Mass (g):876
Shock stage:S2
Weathering grade:W1/2
Fayalite (mol%):18.8±0.7
Ferrosilite (mol%):16.4±0.3
Wollastonite (mol%):1.4±0.1
Classifier:A. Irving, UWS, and J. Boesenberg, BrownU
Type spec mass (g):25.1
Type spec location:PSF
Main mass:J. Whitcomb
Comments:Work name JW-127; submitted by A. Irving
   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)
BrownU: Joseph Boesenberg Brown University Dept of Earth, Environmental and Planetary Sciences (DEEPS) 324 Brook Street Providence, RI 02912 , United States (institutional address; updated 26 Oct 2023)
References: Published in Meteoritical Bulletin, no. 111, in preparation (2022)
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     This is 1 of 9429 approved meteorites from (Northwest Africa) (plus 1876 unapproved names)

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