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Northwest Africa 15714
Basic information Name: Northwest Africa 15714
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 15714
Observed fall: No
Year found: 2022
Country: (Northwest Africa)
Mass:help 33 g
Meteoritical Bulletin:  MB 112  (2023)  Lunar (feldsp. breccia)
Recommended:  Lunar (feldsp. breccia)    [explanation]

This is 1 of 334 approved meteorites classified as Lunar (feldsp. breccia).   [show all]
Search for other: Lunar meteorites
Comments: Approved 23 Feb 2023
Writeup from MB 112:

Northwest Africa 15714 (NWA 15714)

(Northwest Africa)

Purchased: 2022

Classification: Lunar meteorite (feldspathic breccia)

History: Acquired in 2022 by Daniel Sheikh from a meteorite dealer in Algeria.

Physical characteristics: Single stone with minor fusion crust.

Petrography: (D. Sheikh, Cascadia) Speimen is a breccia comprised of mm to cm-sized lithic clasts set within a fine-grained fragmental matrix containing isolated mineral clasts and accessory ilmenite, chromite, and troilite. Lithic clast lithologies are predominantly FAN in composition (e.g. anorthosites, noritic anorthosites, anorthositic norites) with minor Mg-suite input (e.g. troctolites, troctolitic anorthosites, and a zoned dunite clast containing a chromite-augite symplectite in olivine).

Geochemistry: Olivine (Fa26.1±5.3, range Fa15.3-34.2, Fe/Mn=92±13, n=56), Low-Ca Pyroxene (Fs18.8±6.7Wo3.0±0.6, range Fs10.1-30.0Wo2.1-4.1, Fe/Mn=51±6, n=9), Pigeonite (Fs20.6±5.0Wo13.0±4.6, range Fs13.4-33.1Wo6.4-21.9, Fe/Mn=47±8, n=20), High-Ca Pyroxene (Fs9.4±7.6Wo38.0±8.3, range Fs4.9-18.2Wo28.5-43.3, Fe/Mn=29±8, n=3), Calcic Plagioclase (An95.7±2.4, range An86.5-97.8, n=57).

Classification: Lunar (feldspathic fragmental breccia).

Specimens: 20.2 g at Cascadia, main mass with Cascadia.

Data from:
  Table 0
  Line 0:
Place of purchase:Algeria
Date:P 2022
Mass (g):33
Class:Lunar (feldsp. breccia)
Shock stage:moderate
Weathering grade:low
Fayalite (mol%):26.1±5.3
Ferrosilite (mol%):18.8±6.7, 20.6±5.0, 9.4±7.6
Wollastonite (mol%):3.0±0.6, 13.0±4.6, 38.0±8.3
Classifier:D. Sheikh, Cascadia
Type spec mass (g):20.2
Type spec location:Cascadia
Main mass:Cascadia
Comments:CML 1502; submitted by Daniel Sheikh
   and collections
Cascadia: Cascadia Meteorite Laboratory, Portland State University, Department of Geology, Room 17 Cramer Hall, 1721 SW Broadway, Portland, OR 97201, United States; Website (institutional address; updated 28 Oct 2011)
References: Published in Meteoritical Bulletin, no. 112, in preparation (2023)
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     This is 1 of 9559 approved meteorites from (Northwest Africa) (plus 1872 unapproved names)

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