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Northwest Africa 11484
Basic information Name: Northwest Africa 11484
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11484
Observed fall: No
Year found: 2015
Country: Morocco
Mass:help 21.1 g
Meteoritical Bulletin:  MB 106  (2018)  LL3
Recommended:  LL3    [explanation]

This is 1 of 371 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 30 Oct 2017
Writeup from MB 106:

Northwest Africa 11484 (NWA 11484)


Purchased: Nov 2015

Classification: Ordinary chondrite (LL3)

History: Purchased at the Verona Mineral Fair by Lucian Cojocaru from a Moroccan dealer.

Physical characteristics: Single stone weighing 21.1 g without fusion crust.

Petrography: (V. Moggi Cecchi, G. Pratesi, S. Caporal, UniFi) The thin section consists of separated, well-formed chondrules up to 2 mm in diameter, sometimes rimmed with altered metal. Chondrules types are various: PO, GO, poikilitic-PP-poikilitic, POP, B, C; Olivine in PO chondrules is Fa-rich and equilibrated; olivine in GO chondrules is Fa-poor and unequilibrated; the matrix is fine and contains olivine, orthopyroxene and clinopyroxene. Scattered troilite grains, no unaltered metal grains are visible.

Geochemistry: All olivine (Fa25.9±8.2, N = 17), Cr2O3=0.14±0.09 (wt%), Fa-rich olivine in PO chondrules (Fa35.5±8.2, N = 11); Fa-poor olivine in GO chondrules (Fa11.3±6.1, N = 6); low-Ca pyroxene (Fs18.9±5.3Wo1.3±0.2, N = 11); clinopyroxene (Fs15.4±0.3Wo31.5±0.8, N = 4);

Classification: LL3

Specimens: 5.3 g including one polished thin section at MSN-Fi; main mass with Cojocaru.

Data from:
  Table 0
  Line 0:
Place of purchase:Verona
Date:P Nov 2015
Mass (g):21.1
Shock stage:S1
Weathering grade:W3
Fayalite (mol%):25.9±8.2 (n=17)
Ferrosilite (mol%):18.9±5.3 (n=11)
Wollastonite (mol%):1.3±0.2
Classifier:V. Moggi Cecchi, S. Caporali, G. Pratesi, MSN-FI
Type spec mass (g):5.3
Type spec location:MSN-FI
Main mass:Cojocaru
Comments: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 Gattacceca J., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.
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     This is 1 of 1680 approved meteorites from Morocco (plus 25 unapproved names) (plus 1 impact crater)

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