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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:
Recommended:  Lodranite    [explanation]

This is 1 of 86 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 Meteoritical Bulletin, no. 110, in preparation (2021)
Find references in NASA ADS:
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Geography:

Algeria
Coordinates:Unknown.

Statistics:
     This is 1 of 1088 approved meteorites from Algeria (plus 26 unapproved names) (plus 4 impact craters)

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