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Northwest Africa 14212
Basic information Name: Northwest Africa 14212
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14212
Observed fall: No
Year found: 2019
Country: Algeria
Mass:help 1545 g
Classification
  history:
Recommended:  Eucrite-melt breccia    [explanation]

This is 1 of 76 approved meteorites classified as Eucrite-melt breccia.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 18 Sep 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 14212 (NWA 14212)

Algeria

Find: 2019

Classification: HED achondrite (Eucrite, melt breccia)

History: Found near Adrar Algeria in 2019. Purchased in March 2021 by Roberto Vargas and Norman Lebron Jr. from a meteorite dealer in Morocco.

Physical characteristics: Sample contains visible fusion crust. A slice taken of the sample reveals an assortment of light clasts set in a darker matrix.

Petrography: (D. Sheikh, Cascadia) This sample is composed of up to 2 cm sized sub-angular to sub-rounded eucritic clasts containing zoned, equant pyroxene and elongate calcic plagioclase (some cores partially maskelynized) set within a melt rock matrix that contains vesicles. Accessory phases include ilmenite, Ti-bearing chromite, and SiO2-rich glass.

Geochemistry: Low-Ca pyroxene (Fs63.9±1.1Wo2.4±0.6, range Fs61.8-67.1Wo1.5-3.7, Fe/Mn=30±4, n=31), Pigeonite (Fs60.0±0.1Wo8.3±0.6, range Fs59.9-60.1Wo7.9-8.7, Fe/Mn=31±1, n=2), Augite (Fs29.2±1.3Wo42.1±1.1, range Fs27.6-31.2Wo40.1-43.5, Fe/Mn=29±3, n=10), Calcic plagioclase (An87.8±2.8, range An83.6-92.5, n=16).

Classification: HED Achondrite (Eucrite-melt breccia).

Specimens: 21 g and a thin section at Cascadia; main mass with Roberto Vargas.

Data from:
  MB110
  Table 0
  Line 0:
Date:2019
Mass (g):1545
Pieces:1
Class:Eucrite-melt breccia
Shock stage:high
Weathering grade:low
Ferrosilite (mol%):63.9±1.1, 60.0±0.1, 29.2±1.3
Wollastonite (mol%):2.4±0.6, 8.3±0.6, 42.1±1.1
Classifier:D. Sheikh, Cascadia
Type spec mass (g):21
Type spec location:Cascadia
Main mass:Roberto Vargas
Comments: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., 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
Find references in NASA ADS:
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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Ryan Upchurch   
Geography:

Algeria
Coordinates:Unknown.

Statistics:
     This is 1 of 1277 approved meteorites from Algeria (plus 29 unapproved names) (plus 4 impact craters)

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