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Northwest Africa 13365
Basic information Name: Northwest Africa 13365
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13365
Observed fall: No
Year found: 2019
Country: Morocco
Mass:help 230 g
Classification
  history:
Recommended:  Diogenite    [explanation]

This is 1 of 442 approved meteorites classified as Diogenite.   [show all]
Search for other: Achondrites, Diogenites, and HED achondrites
Comments: Approved 19 Jul 2020
Writeuphelp
Writeup from MB 109:

Northwest Africa 13365 (NWA 13365)

Morocco

Purchased: 2019

Classification: HED achondrite (Diogenite)

History: 5 stones weighing 230.2 g were found in Morocco prior to 2019. Marc Jost (SJS) purchased these samples from a meteorite dealer while at the 2019 Ensisheim Meteorite Show.

Physical characteristics: The samples are irregularly shaped, lack fusion crust and have a yellowish-brown exterior. The type specimen has a yellowish-orange interior that is brecciated and friable. The cut face shows angular-sub-rounded clasts up to 1.5 cm in long dimension.

Petrography: Description and classification (A. Love, App): Sample is an aggregate of fractured, 250-1024 µm orthopyroxene grains which share 120º grain boundaries. Sparse areas with fine-grained brecciated texture were observed. Orthopyroxenes contain exsolved Cpx inclusions. Additional minerals are: chromite, silica polymorphs, FeS and rare Ni-free iron metal.

Geochemistry: Diogenite clasts: low-Ca pyroxene (Fs27.5±0.2Wo3.4±0.5, Fe/Mn=26.4±0.4, Mg#71.3-71.6, n=8); high-Ca pyroxene exsolution lamellae (Fs10.7±0.5Wo45.2±1.0, Fe/Mn=19.6±1.2, N=6).

Classification: HED (monomict diogenite breccia). Textures, FeO/MnO and Fs compositions of pyroxenes indicate this sample is a brecciated diogenite.

Specimens: Marc Jost (SJS) holds the main masses. 2 slices weighing 28.13 g and a polished mount are on deposit at App.

Data from:
  MB109
  Table 0
  Line 0:
Place of purchase:Ensisheim
Date:P 2019
Mass (g):230.2
Pieces:5
Class:Diogenite
Shock stage:low
Weathering grade:low
Ferrosilite (mol%):27.5±0.2; 10.7±0.5
Wollastonite (mol%):3.4±0.5; 45.2±1.0
Magnetic suscept.:3.41
Classifier:A. Love, App
Type spec mass (g):28.13
Type spec location:App
Main mass:Marc Jost (SJS)
Comments:Submitted by Anthony Love
Institutions
   and collections
App: Department of Geology, 572 Rivers St., Appalachian State University, Boone, NC 28608, United States (institutional address; updated 7 Mar 2013)
SJS: Space Jewels Switzerland, 2555 Brügg, Switzerland (private address; updated 3 Jan 2010)
Catalogs:
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
Find references in NASA ADS:
Find references in Google Scholar:
Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1498 approved meteorites from Morocco (plus 22 unapproved names) (plus 1 impact crater)

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