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Northwest Africa 16120
Basic information Name: Northwest Africa 16120
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 16120
Observed fall: No
Year found: 2023
Country: (Northwest Africa)
Mass:help 2.87 kg
Classification
  history:
Meteoritical Bulletin:  MB 112  (2023)  LL3
Recommended:  LL3    [explanation]

This is 1 of 492 approved meteorites classified as LL3.   [show all]
Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 21 Aug 2023
Writeuphelp
Writeup from MB 112:

Northwest Africa 16120 (NWA 16120)

(Northwest Africa)

Purchased: 2023

Classification: Ordinary chondrite (LL3)

History: Sergey Vasiliev purchased a single 2870 g stone from a Moroccan meteorite dealer in 2023.

Physical characteristics: Stone is rounded in shape and is sparsely coated with a dull black fusion crust. The cut face shows many visible chondrules set within a light grey matrix.

Petrography: Description and classification (A. Love, App) Sample shows a chondritic texture composed of abundant chondrules with an average apparent diameter of 589 µm (n=63) set within a fine-grained, opaque matrix. Some chondrules are zoned and some contain isotropic glassy mesostasis. Additional minerals are: FeNi grains, troilite, chromite and rare apatite.

Geochemistry: (A. Love, App) Olivine (Fa21.0±12.7, Fe/Mn=68.4±21.2, n=21; Cr2O3 in ferroan olivine=0.1±0.2, n=17); low Ca-pyroxene (Fs9.3±8.1Wo0.8±0.6, Fe/Mn=40.6±35.6 n=10).

Classification: Ordinary chondrite (LL3 C-S2 W2). Based on the textures, mineral compositions, and magnetic susceptibility, sample is an LL3 chondrite. Unequilibrated compositions of minerals and Cr2O3 of ferroan olivines, indicate a subtype ≥3.2. CL signatures indicate a subtype ≥3.5. Estimated subtype is LL3.5.

Specimens: Sergey Vasiliev holds the main mass. A polished thin section and an endcut weighing 42.7 g are on Deposit at App.

Data from:
  MB112
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2023
Mass (g):2870
Pieces:1
Class:LL3
Shock stage:C-S2
Weathering grade:W2
Fayalite (mol%):21.0±12.7
Ferrosilite (mol%):9.3±8.1
Wollastonite (mol%):0.8±0.6
Magnetic suscept.:3.82
Classifier:A. Love, App
Type spec mass (g):42.7
Type spec location:App
Main mass:Sergey Vasiliev
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)
Catalogs:
References: Published in Meteoritical Bulletin, no. 112, in preparation (2023)
Find references in NASA ADS:
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Photos:
CreditPhotos
Photos from the Encyclopedia of Meteorites:
Sergey Vasiliev   
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Antonello Petriccione   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9772 approved meteorites from (Northwest Africa) (plus 1862 unapproved names)

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