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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 409 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 Meteoritical Bulletin, no. 110, in preparation (2021)
Find references in NASA ADS:
Find references in Google Scholar:
Photos:
CreditPhotos
Public domain photographs:
Daniel Sheikh      
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8136 approved meteorites from (Northwest Africa) (plus 1942 unapproved names)

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