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Northwest Africa 13610
Basic information Name: Northwest Africa 13610
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13610
Observed fall: No
Year found: 2019
Country: Western Sahara
Mass:help 104.1 g
Recommended:  L3    [explanation]

This is 1 of 783 approved meteorites (plus 1 unapproved name) classified as L3.   [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 18 Dec 2021
Writeup from MB 110:

Northwest Africa 13610 (NWA 13610)

Western Sahara

Find: 2019

Classification: Ordinary chondrite (L3)

History: A single stone weighing 104 g was found by an anonymous finder in Western Sahara and purchased in 2019 at the Bologna Mineral Fair by Lucian Cojocaru.

Physical characteristics: The main mass is almost entirely covered by a dark brown, stained fusion crust; the interior looks relatively fresh.

Petrography: (V. Moggi Cecchi, L. Fabrizi, G. Pratesi, UniFi): The thin section displays a well-defined chondritic texture, with various chondrule types (PP, PO and BO), sometimes rimmed with metal, set in a fine grained matrix. Both olivine and orthopyroxene are slightly inhomogeneous. Iron oxides, Fe-Ni alloys and troilite are the main opaque phases and can be found as individual grains scattered in the matrix or rimming chondrules.

Geochemistry: EMP (V. Moggi Cecchi, G. Pratesi, UniFi); Olivine in both chondrules and matrix (Fa22.7±2.6Fo77.3±2.2; n=30; Fe/Mn = 49.6); low-Ca pyroxene in both chondrules and matrix (Fs17.7±3.5En81.1±2.9Wo0.8±0.2; n=47; Fe/Mn = 32.3).

Classification: Ordinary Chondrite (L3); S3; W2.

Specimens: Lucian Cojocaru owns the main mass, weighing 104.1 g; the type specimen, weighing 20.6 g, and one thin section are on deposit at MSN-FI (Inventory # I-3626)

Data from:
  Table 0
  Line 0:
Place of purchase:Bologna Mineral Fair
Mass (g):104.1
Shock stage:S3
Weathering grade:W2
Fayalite (mol%):22.7±2.6 (N=30)
Ferrosilite (mol%):19.0±2.5 (N=47)
Wollastonite (mol%):0.8±0.2
Classifier:V. Moggi Cecchi, L. Fabrizi, UniFi
Type spec mass (g):20.6
Type spec location:MSN-FI
Main mass:Lucian Cojocaru
Comments:Provisional name NWA 13611; Inventory # I-3626; submitted by Vanni Moggi Cecchi
   and collections
MSN-FI: MUSEO DI STORIA NATURALE DELL'UNIVERSITA' DEGLI STUDI DI FIRENZE Via Giorgio La Pira, 4 – 50121 FIRENZE, Italy; Website (institutional address; updated 14 Jan 2015)
UniFi: Università degli Studi di Firenze, P.zza S. Marco, 4 - 50121 Firenze, Italy (institutional address; updated 14 Sep 2013)
References: Published in Meteoritical Bulletin, no. 110, in preparation (2021)
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Western Sahara

     This is 1 of 250 approved meteorites from Western Sahara (plus 20 unapproved names)

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