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Northwest Africa 10909
Basic information Name: Northwest Africa 10909
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10909
Observed fall: No
Year found: 2015
Country: Western Sahara
Mass:help 924 g
Classification
  history:
Recommended:  Eucrite-mmict    [explanation]

This is 1 of 195 approved meteorites classified as Eucrite-mmict.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 26 Nov 2016
Writeuphelp
Writeup from MB 105:

Northwest Africa 10909 (NWA 10909)

Morocco, Western Sahara

Find: 2015 Aug

Classification: HED achondrite (Eucrite, monomict)

History: Six complete stones covered with dark fusion crust were found in the desert by a nomad. The stones (originally 201.3, 110.9, 121.7, 127.1, 100.3, and 152 g) were sent to MCM for study. After the first studies, several grams were sent to UPC, where analysis was performed by Dr. J. Llorca in October 2015.

Petrography: The meteorite displays a basaltic texture with up to 1.5 mm sized exsolved pyroxenes and equally sized lath-shaped calcic plagioclase. Minor phases include chromite, SiO2 polymorphs, ilmenite and metallic iron.

Geochemistry: (J.Llorca, UPC) Orthopyroxene; Fs57.4±0.9, Wo2.2±1.4, FeO/MnO = 32±1, n=19. Plagioclase; An87.1±2.6, n=21.

Classification: Monomict eucrite.

Specimens: The remaining masses are in the private collection of Javier Franco, Las Palmas de Gran Canaria, Spain, and 90.9 g at MCM. Repository sample: 20 g UPC.

Data from:
  MB105
  Table 0
  Line 0:
State/Prov/County:Morocco
Origin or pseudonym:112 km south of Tindouf
Place of purchase:Laayoune
Date:2015 Aug
Mass (g):924.2
Pieces:6
Class:Eucrite-mmict
Weathering grade:low
Ferrosilite (mol%):57.4 ± 0.9 (N=19)
Wollastonite (mol%):2.2 ± 1.4 (N=19)
Classifier:J. Llorca, UPC
Type spec mass (g):20
Type spec location:UPC
Main mass:Javier Franco
Comments:Submitted by José García.
Institutions
   and collections
UPC: Institut de Tècniques Energètiques, Universitat Politècnica de Catalunya Diagonal 647, ed. ETSEIB, 08028 Barcelona, Spain, Spain (institutional address; updated 3 May 2015)
MCM: Museo Canario de Meteoritos Las Palmas de Gran Canaria, Spain (institutional address; updated 26 Nov 2016)
Catalogs:
References: Published in Meteoritical Bulletin, no. 105, in preparation (2016)
Find references in NASA ADS:
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Geography:

Western Sahara
Coordinates:Unknown.

Statistics:
     This is the only approved meteorite from Morocco, Western Sahara
     This is 1 of 169 approved meteorites from Western Sahara (plus 18 unapproved names)

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