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Northwest Africa 13750
Basic information Name: Northwest Africa 13750
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13750
Observed fall: No
Year found: 2020
Country: Algeria
Mass:help 573 g
Classification
  history:
Meteoritical Bulletin:  MB 110  (2022)  Lodranite
Recommended:  Lodranite    [explanation]

This is 1 of 93 approved meteorites classified as Lodranite.   [show all]
Search for other: Acapulcoite-lodranite family, Lodranites, and Primitive achondrites
Comments: Approved 20 Mar 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 13750 (NWA 13750)

Algeria

Find: 2020

Classification: Primitive achondrite (Lodranite)

History: Found in 2020 near the town of Hassi Messaoud, Algeria. Later purchased in 2020 by Aziz Zad.

Physical characteristics: Single stone with dark-brown fusion crust.

Petrography: (D. Sheikh, FSU) Specimen displays a granular texture primarily composed of ~1 mm (up to 2.5 mm) olivine and low-ca pyroxene grains (some meeting at ~120° triple junctions). Accessory phases include kamacite and troilite.

Geochemistry: Olivine (Fa12.3±0.9, range Fa9.6-13.8, Fe/Mn=24±4, n=32), Low-Ca Pyroxene (Fs11.1±0.6Wo4.9±0.2, range Fs10.5-13.6Wo4.6-5.3, Fe/Mn=16±2, n=26).

Classification: Primitive achondrite (Lodranite).

Specimens: 20.2 g at UCLA, main mass with Aziz Zad.

Data from:
  MB110
  Table 0
  Line 0:
Date:2020
Mass (g):573
Pieces:1
Class:Lodranite
Shock stage:low
Weathering grade:low
Fayalite (mol%):12.3±0.9
Ferrosilite (mol%):11.1±0.6
Wollastonite (mol%):4.9±0.2
Classifier:D. Sheikh, FSU
Type spec mass (g):20.2
Type spec location:UCLA
Main mass:Aziz Zad
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 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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Geography:

Algeria
Coordinates:Unknown.

Statistics:
     This is 1 of 1356 approved meteorites from Algeria (plus 30 unapproved names) (plus 4 impact craters)
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Revision
  history:
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