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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 49 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 Meteoritical Bulletin, no. 110, in preparation (2021)
Find references in NASA ADS:
Find references in Google Scholar:
Geography:

Algeria
Coordinates:Unknown.

Statistics:
     This is 1 of 1136 approved meteorites from Algeria (plus 27 unapproved names) (plus 4 impact craters)

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