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Northwest Africa 13296
Basic information Name: Northwest Africa 13296
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13296
Observed fall: No
Year found: 2019
Country: Algeria
Mass:help 319 g
Classification
  history:
Recommended:  Eucrite-br    [explanation]

This is 1 of 174 approved meteorites classified as Eucrite-br.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 23 May 2020
Writeuphelp
Writeup from MB 109:

Northwest Africa 13296 (NWA 13296)

Algeria

Find: 2019

Classification: HED achondrite (Eucrite, brecciated)

History: Purchased by Matthew Stream in 2019 from a meteorite dealer in Algeria.

Physical characteristics: Single stone with minor fusion crust.

Petrography: (D. Sheikh, FSU) Sample is a brecciated eucrite containing low-calcium pyroxene, pigeonite, augite, calcic plagioclase, ilmenite, SiO2 glass, troilite, fayalite, zircon, chromite (some with Ti), and baddeleyite.

Geochemistry: Low-Ca pyroxene (Fs60.5±1.1Wo2.1±0.5, range Fs57.2-62.7Wo1.5-4.2, FeO/MnO=32±3, n=60); pigeonite (Fs54.6±3.5Wo10.8±4.1, range Fs46.4-58.1Wo6.5-18.3, FeO/MnO=33±3, n=10); augite (Fs26.7±2.3Wo42.5±2.8, range Fs25.2-32.5Wo35.8-45.4, FeO/MnO=32±3, n=12); calcic plagioclase (An85.1±3.0, range An79.1-92.7, n=50), Ilmenite (Fe/(Fe+Mg)=97.8±0.3, n=4); fayalite (Fa80.1, n=1).

Classification: HED achondrite (Eucrite, brecciated)

Specimens: 22.51 grams at UCLA; main mass with Matthew Stream.

Data from:
  MB109
  Table 0
  Line 0:
Date:2019
Mass (g):319
Pieces:1
Class:Eucrite-br
Shock stage:low
Weathering grade:low
Fayalite (mol%):80.1 (N=1)
Ferrosilite (mol%):60.5±1.1, 54.6±3.5, 26.7±2.3
Wollastonite (mol%):2.1±0.5, 10.8±4.1, 42.5±2.8
Magnetic suscept.:3.24
Classifier:D. Sheikh, FSU
Type spec mass (g):22.51
Type spec location:UCLA
Main mass:Matthew Stream
Comments:Submitted by Daniel Sheikh
Institutions
   and collections
UCLA: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095-1567, United States (institutional address; updated 17 Oct 2011)
FSU: Department of Geological Sciences, Florida State University, Tallahassee FL 32306-4100, United States (institutional address; updated 16 Dec 2010)
Catalogs:
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
Find references in NASA ADS:
Find references in Google Scholar:
Geography:

Algeria
Coordinates:Unknown.

Statistics:
     This is 1 of 1003 approved meteorites from Algeria (plus 26 unapproved names) (plus 4 impact craters)

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