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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
Classification
  history:
Meteoritical Bulletin:  MB 112  (2024)  Lunar (feldsp. breccia)
Recommended:  Lunar (feldsp. breccia)    [explanation]

This is 1 of 341 approved meteorites classified as Lunar (feldsp. breccia).   [show all]
Search for other: Lunar meteorites
Comments: Approved 23 Feb 2023
Writeuphelp
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:
  MB112
  Table 0
  Line 0:
Place of purchase:Algeria
Date:P 2022
Mass (g):33
Pieces:1
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
Institutions
   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)
Catalogs:
References: Published in Gattacceca J., McCubbin F. M., Grossman J. N., Schrader D. L., Cartier C., Consolmagno G., Goodrich C., Greshake A., Gross J., Joy K. H., Miao B. and Zhang B. (2024) The Meteoritical Bulletin, no. 112. Meteoritics & Planetary Science 59, 1820–1823. ?
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9806 approved meteorites from (Northwest Africa) (plus 1855 unapproved names)

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