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Northwest Africa 15025
Basic information Name: Northwest Africa 15025
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 15025
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 170 g
Recommended:  R3    [explanation]

This is 1 of 69 approved meteorites classified as R3.   [show all]
Search for other: Rumuruti chondrites, Rumuruti chondrites (type 3)
Comments: Approved 4 Mar 2023
Writeup from MB 112:

Northwest Africa 15025 (NWA 15025)

(Northwest Africa)

Purchased: 2021 Aug

Classification: Rumuruti chondrite (R3)

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

Petrography: (A. Irving, UWS and J. Boesenberg, BrownU) Well-delineated chondrules (apparent diameter 590 ± 300 µm, N = 25), zoned olivine fragments and fine-grained CAI are set in a fine grained matrix (~35 vol.%, deep reddish-brown in thin section) containing troilite, chromite and minor magnetite and secondary gypsum. Rare kamacite is present within some chondrules.

Geochemistry: Olivine (Fa30.3±13.4, range Fa8.9-45.7, N = 9; Cr2O3 in ferroan olivine 0.04-0.07 wt.%, N = 8), low-Ca pyroxene (Fs13.5±9.8Wo1.5±1.3, range Fs3.5-24.2Wo0.3-3.1, N = 5), augite (Fs35.8±2.4Wo46.4±2.0, range Fs34.1-37.5Wo45.0-47.8, N = 2). Magnetic susceptibility log χ (× 10-9 m3/kg) = 2.96.

Classification: Rumuruti chondrite (R3)

Specimens: 22.6 g including one polished thin section at PSF; remainder with Mr. J. Whitcomb.

Data from:
  Table 0
  Line 0:
Place of purchase:Algeria
Date:P 2021 Aug
Mass (g):170
Shock stage:S2
Weathering grade:low
Fayalite (mol%):30.3±13.4
Ferrosilite (mol%):13.5±9.8
Wollastonite (mol%):1.5±1.3
Magnetic suscept.:2.96
Classifier:A. Irving, UWS, and J. Boesenberg, BrownU
Type spec mass (g):22.6
Type spec location:PSF
Main mass:J. Whitcomb
Comments:Work name JW-82; 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: Brown University Providence, RI 02912, United States (institutional address; updated 7 Sep 2019)
References: Published in Meteoritical Bulletin, no. 112, in preparation (2023)
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     This is 1 of 9042 approved meteorites from (Northwest Africa) (plus 1870 unapproved names)

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