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Northwest Africa 14512
Basic information Name: Northwest Africa 14512
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14512
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 52.3 g
Classification
  history:
Recommended:  Howardite    [explanation]

This is 1 of 432 approved meteorites classified as Howardite.   [show all]
Search for other: Achondrites, HED achondrites, and Howardites
Comments: Approved 15 Dec 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 14512 (NWA 14512)

(Northwest Africa)

Purchased: 1 April 2021

Classification: HED achondrite (Howardite)

History: An importer of Moroccan meteorites brought a collection of stones to Robert Verish for classification.

Physical characteristics: Two fragments (33.6 + 18.7 g), 60% covered with a brownish-black fusion-crust. A broken surface, as well as the cut surface reveals a light-gray interior with a variety of clasts of different color and size, some lighter-colored than the gray matrix.

Petrography: (D. Sheikh, Cascadia) Sample is a breccia composed of sub-angular lithic and mineral clasts (up to ~0.8 mm) set within a fine-grained matrix. Lithic clast lithologies include both blocky clasts dominated by orthopyroxene (~50 %) and other clasts (both basaltic and cumulate) composed of low-Ca pyroxene, pigeonite (some exsolved), augite (some exsolved), and calcic plagioclase (~50 %). One large diogenite clast composed of orthopyroxene (~ 5 mm) is present in the observed thin section. Accessory phases (<1 %) include SiO2-rich glass, ilmenite, troilite, and chromite.

Geochemistry: Blocky clasts (diogenite): Low-Ca Pyroxene (Fs26.4±5.6Wo2.6±1.2, range Fs17.0-36.2Wo1.1-5.1, FeO/MnO=34±5, n=15); other clasts (eucrite): Low-Ca Pyroxene (Fs46.5±6.4Wo4.9±1.1, range Fs40.2-58.9Wo3.1-6.0, FeO/MnO=35±2, n=6), Pigeonite (Fs43.0±7.9Wo9.3±4.8, range Fs29.6-53.6Wo6.0-23.6, FeO/MnO=32±2, n=13), Augite (Fs33.8±4.1Wo32.3±8.4, range Fs30.1-38.3Wo26.0-41.8, FeO/MnO=33±1, n=3), Calcic Plagioclase (An89.4±4.0, range An81.2-94.7, n=11).

Classification: HED achondrite (Howardite)

Specimens: 13.6 g at UCLA, main mass with Verish

Data from:
  MB110
  Table 0
  Line 0:
Origin or pseudonym:Sahara Desert
Place of purchase:Escondido, CA
Date:P 1 April 2021
Mass (g):52.3
Pieces:2
Class:Howardite
Shock stage:moderate
Weathering grade:low
Ferrosilite (mol%):26.4±5.6, 46.5±6.4, 43.0±7.9, 33.8±4.1, 32.3±
Wollastonite (mol%):2.6±1.2, 4.9±1.1, 9.3±4.8,
Classifier:D. Sheikh, Cascadia
Type spec mass (g):13.6
Type spec location:UCLA
Main mass:Verish
Comments:Lab/thin-section ID: V-127; 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)
UCLA: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095-1567, United States (institutional address; updated 17 Oct 2011)
Verish: Robert Verish, Meteorite-Recovery Lab, P.O. Box 463084, Escondido, CA 92046, United States; Website (private address; updated 27 May 2009)
Catalogs:
References: Published in Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4
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Photos:
CreditPhotos
Public domain photographs:
Daniel Sheikh      
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8904 approved meteorites from (Northwest Africa) (plus 1871 unapproved names)

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