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Northwest Africa 14355
Basic information Name: Northwest Africa 14355
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14355
Observed fall: No
Year found: 2019
Country: Morocco
Mass:help 13 g
Recommended:  H4    [explanation]

This is 1 of 6375 approved meteorites (plus 2 unapproved names) classified as H4.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 13 Nov 2021
Writeup from MB 110:

Northwest Africa 14355 (NWA 14355)


Purchased: 2019 Mar

Classification: Ordinary chondrite (H4)

History: A single stone weighing 13 g was purchased by Antonello Petriccione at the Bologna Mineral Fair in 2019

Physical characteristics: The main mass displays a partial, brown fusion crust.

Petrography: (V. Moggi Cecchi, L. Fabrizi, G.Pratesi, UniFi): The thin section shows an unequilibrated chondritic texture, with chondrules easily distinguishable from the matrix. Various chondrule types (PP poikilitic, PO, RP and BO) are evident, set in a fine grained matrix. Olivine is homogeneous, while orthopyroxene is slightly inhomogeneous. Iron oxides are diffuse, although Fe-Ni alloys and troilite are rare and scattered in the matrix as individual grains;

Geochemistry: EMP (V.Moggi Cecchi, L.Fabrizi, G.Pratesi UniFi); Olivine in both chondrules and matrix (Fa18.9±0.9Fo81.1±0.8; Fe/Mn = 40; n=53); low-Ca pyroxene in both chondrules and matrix (Fs9.3±3.1En89.9±3.3Wo0.8±0.3; Fe/Mn = 26; n=53);

Classification: Ordinary Chondrite (H4); S1; W2;

Specimens: The main mass, weighing 9 g, is owned by Antonello Petriccione; the type specimen, weighing 4 g, and one thin section are on deposit at MSN-FI (Inventory # I-3651).

Data from:
  Table 0
  Line 0:
Place of purchase:Bologna
Date:P 2019 Mar
Mass (g):13
Shock stage:S1
Weathering grade:W2
Fayalite (mol%):18.9±0.9 (N=53)
Ferrosilite (mol%):9.3±2.6 (N=53)
Wollastonite (mol%):0.9±0.1
Classifier:V. Moggi Cecchi, L. Fabrizi, G. Pratesi
Type spec mass (g):4
Type spec location:MSN-FI
Main mass:Petriccione
Comments:Field PET20-3;Inv.# I-3651;; 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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     This is 1 of 1894 approved meteorites from Morocco (plus 27 unapproved names) (plus 1 impact crater)

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