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Northwest Africa 13744
Basic information Name: Northwest Africa 13744
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13744
Observed fall: No
Year found: 2015
Country: (Northwest Africa)
Mass:help 2.79 kg
Recommended:  Diogenite    [explanation]

This is 1 of 485 approved meteorites classified as Diogenite.   [show all]
Search for other: Achondrites, Diogenites, and HED achondrites
Comments: Approved 25 Apr 2021
Writeup from MB 110:

Northwest Africa 13744 (NWA 13744)

(Northwest Africa)

Purchased: 2015

Classification: HED achondrite (Diogenite)

History: Type specimen donated to Cascadia by Mohammed Hmani at the Tucson Gem Show in 2020.

Physical characteristics: Physical Characteristics: Single pale yellow-orange-colored stone partially covered with black fusion crust and speckled with black pyroxene gains up to 2 mm across.

Petrography: (M. Hutson, A. Ruzicka, Cascadia): In thin section, coarse-grained material forms poorly defined clasts separated by finer-grained cataclastic zones. Orthopyroxene and calcic clinopyroxene grains, and accessory chromite are present. Clinopyroxene is mostly present as individual grains, but also as exsolution lamellae in low-Ca pyroxene.

Geochemistry: Mineral compositions and geochemistry: Low-Ca pyroxene: Fs27.4±0.3Wo2.6±0.8, Fe/Mn=26.1, Fe/Mg=0.391, N=33; High-Ca pyroxene Fs10.4±0.4Wo44.2±0.4, N=7; Chromite: MG# 16.2±1, CR# 74.2±1.2, N=8.

Classification: Diogenite based on mineralogy and mineral compositions.

Specimens: Cascadia holds 34.8 g in one piece, as well as a polished thin section and butt.

Data from:
  Table 0
  Line 0:
Place of purchase:Erfoud
Date:P 2015
Mass (g):2790
Ferrosilite (mol%):27.7±0.3 (N=33)
Wollastonite (mol%):2.6±0.8 (N=33)
Classifier:M. Hutson and A. Ruzicka, Cascadia
Type spec mass (g):34.8
Type spec location:Cascadia
Main mass:HMANI Inc.
Comments:Lab number CML 1319, HMANI identification Tuc 02; submitted by Melinda Hutson
   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)
Hmani: A. Hmani Moroccan Imports, 13 rue Jules Hardouin Mansart, 92600 Asnières, France (private address)
References: Published in Meteoritical Bulletin, no. 110, in preparation (2021)
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     This is 1 of 8136 approved meteorites from (Northwest Africa) (plus 1942 unapproved names)

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