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Northwest Africa 13709
Basic information Name: Northwest Africa 13709
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13709
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass:help 254 g
Classification
  history:
Recommended:  L-melt rock    [explanation]

This is 1 of 39 approved meteorites classified as L-melt rock.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Melted chondrites, Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 20 Mar 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 13709 (NWA 13709)

(Northwest Africa)

Purchased: September 2020

Classification: Ordinary chondrite (L, melt rock)

Physical characteristics: A single dark stone. Cut face reveals a dark homogeneous interior with mm-sized round composite metal-sulfide grains.

Petrography: (J. Gattacceca, CEREGE) Igneous rock with granular texture. Main minerals are olivine and pyroxene (~40 µm), and plagioclase (~20 µm). Metal and troilite are present as 50 µm interstitial grains, µm-size blebs within silicates, and composite metal/troilite spheres up to 2 mm in size.

Geochemistry: Olivine Fa25.2±1.8, CaO=0.18 wt% (n=3). Low-Ca pyroxene Fs19.5Wo2.6 (n=2).

Classification: Ordinary chondrite (L-melt rock).

Specimens: Type specimen at CEREGE. Main mass with Kuntz.

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Guelmin, Morocco
Date:P Sept 2020
Mass (g):253.6
Pieces:1
Class:L-melt rock
Weathering grade:W2
Fayalite (mol%):25.2±1.8 (n=3)
Ferrosilite (mol%):19.5 (n=2)
Wollastonite (mol%):2.6
Magnetic suscept.:4.48
Classifier:J. Gattacceca, CEREGE
Type spec mass (g):22.69
Type spec location:CEREGE
Main mass:Kuntz
Finder:anonymous
Comments:work name K502; submitted by Jérôme Gattacceca
Institutions
   and collections		 CEREGE: CEREGE BP 80 Avenue Philibert, Technopole de l'Arbois 13545 Aix-en-Provence Cedex 4 France, France (institutional address; updated 29 Oct 2018)
Kuntz: Fabien Kuntz, France; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 110, in preparation (2021)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7655 approved meteorites from (Northwest Africa) (plus 1972 unapproved names)

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