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Northwest Africa 13253
Basic information Name: Northwest Africa 13253
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13253
Observed fall: No
Year found: 2019
Country: Morocco
Mass:help 211 g
Recommended:  H5    [explanation]

This is 1 of 10909 approved meteorites (plus 20 unapproved names) classified as H5.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 7 Mar 2020
Writeup from MB 109:

Northwest Africa 13253 (NWA 13253)


Purchased: 2019

Classification: Ordinary chondrite (H5)

History: Marc Jost (SJS) purchased the sample from Mohamed Hmani at the St. Marie aux Mines show in June 2019.

Physical characteristics: The 210. 6g stone is dark-brown in color, irregular in shape and lacks fusion crust. Small chondrules are visible on the surface. The cut face is pock marked and shows abundant chondrules surrounded by gray veinlets and troilite grains.

Petrography: Description and classification (A. Love, App) Sample has a recrystallized chondritic texture composed of distinct, densely packed chondrules and fragments surrounded by abundant weathered FeNi metal and FeS. Chondrules have an average apparent diameter of 504 μm (n=44) and show recrystallized mesostasis. Additional minerals are chromite, apatite, troilite, pentlandite and secondary plagioclase.

Geochemistry: (A. Love, App) Olivine (Fa17.5±0.1, Fe/Mn=35.2±0.8, n=8), low-Ca pyroxene (Fs16.2±0.1Wo1.1±0.1, n=8).

Classification: Ordinary chondrite (H5, C-S2, W3). Based on mineral compositions and textures this is an H5.

Specimens: Marc Jost (SJS) holds the main mass. An endcut weighing 20.59 and a polished thinsection and epoxy mount are on deposit at App.

Data from:
  Table 0
  Line 0:
Place of purchase:Str. Marie aux Mines
Date:P 2019
Mass (g):210.6
Shock stage:C-S2
Weathering grade:W3
Fayalite (mol%):17.5±0.1
Ferrosilite (mol%):16.2±0.1
Wollastonite (mol%):1.1±0.1
Magnetic suscept.:4.99
Classifier:A. Love, App
Type spec mass (g):20.59
Type spec location:App
Main mass:Marc Jost (SJS)
Comments:Submitted by Anthony Love
   and collections
App: Department of Geology, 572 Rivers St., Appalachian State University, Boone, NC 28608, United States (institutional address; updated 7 Mar 2013)
Hmani: A. Hmani Moroccan Imports, 13 rue Jules Hardouin Mansart, 92600 Asnières, France (private address)
SJS: Space Jewels Switzerland, 2555 Brügg, Switzerland (private address; updated 3 Jan 2010)
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
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     This is 1 of 1887 approved meteorites from Morocco (plus 26 unapproved names) (plus 1 impact crater)

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