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Northwest Africa 13630
Basic information Name: Northwest Africa 13630
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13630
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass:help 85 g
Classification
  history:
Recommended:  Diogenite    [explanation]

This is 1 of 481 approved meteorites classified as Diogenite.   [show all]
Search for other: Achondrites, Diogenites, and HED achondrites
Comments: Approved 16 Dec 2020
Writeuphelp
Writeup from MB 109:

Northwest Africa 13630 (NWA 13630)

(Northwest Africa)

Purchased: 2020

Classification: HED achondrite (Diogenite)

History: The meteorite was purchased from a dealer in Morocco.

Physical characteristics: Six fragments some of which almost completely covered with fusion crust.

Petrography: Fragmental breccia predominantly composed of up to 1.5 mm sized orthopyroxene crystals set into fine-grained related matrix. Some of the pyroxenes display magmatic zoning. Minor phases include olivine, calcic plagioclase, chromite, FeS, and FeNi-metal.

Geochemistry: zoned low-Ca pyroxene: Fs24.5±1.5Wo2.0±0.6 (Fs22.9-27.7Wo1.1-2.8, n=16, FeO/MnO=26±2); olivine: Fa35.3±0.1 (Fa35.1-35.6, n=16, FeO/MnO=44±2)

Classification: Diogenite (olivine-bearing)

Data from:
  MB109
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2020
Mass (g):85
Pieces:6
Class:Diogenite
Shock stage:moderate
Weathering grade:low
Fayalite (mol%):35.3
Ferrosilite (mol%):24.5
Wollastonite (mol%):2.0
Classifier:A. Greshake, MNB
Type spec mass (g):20.6
Type spec location:MNB
Main mass:Boulaouane Taleb Ahmed
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
Catalogs:
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8037 approved meteorites from (Northwest Africa) (plus 1947 unapproved names)

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