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Northwest Africa 5375
Basic information Name: Northwest Africa 5375
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 5375
Observed fall: No
Year found: 2008
Country: (Northwest Africa)
Mass:help 24.6 g
Classification
  history:
Recommended:  Eucrite-pmict    [explanation]

This is 1 of 379 approved meteorites classified as Eucrite-pmict.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 19 Feb 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 5375 (NWA 5375)

(Northwest Africa)

Purchased: 2008

Classification: HED achondrite (Eucrite, polymict)

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

Physical characteristics: Grayish rock partly covered with fusion crust.

Petrography: Polymict breccia composed of up to 4 mm sized fine-grained granular clasts set in a coarse-grained basaltic groundmass. Main minerals are up to 1 mm sized exsolved pyroxene, zoned low-Ca pyroxene, and calcic plagioclase. Minor phases include silica, chromite, and FeS. No metallic iron detected.

Geochemistry: low-Ca pyroxene host to exsolution lamellae: Fs55.8±1.7Wo2.5±0.8 (Fs54.3-59.0Wo1.1-3.3, FeO/MnO=29-31, n=7); augite exsolution lamellae: Fs15.5±0.1Wo43.7±0.2 (Fs15.3-15.7Wo43.5-44.0, FeO/MnO=24-28, n=7); zoned low-Ca pyroxene: Fs47.6±5.6Wo2.4±0.1 (Fs40.2-53.9Wo2.2-2.5, FeO/MnO=30-35, n=7); calcic plagioclase: An91.6±0.4 (An91.0-92.3, n=7)

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Erfoud, Morocco
Date:P 2008
Mass (g):24.6
Pieces:1
Class:Eucrite-pmict
Shock stage:high
Weathering grade:low
Ferrosilite (mol%):55.8; 15.5; 47.6
Wollastonite (mol%):2.5; 43.7; 2.4
Classifier:A. Greshake, MNB
Type spec mass (g):5.4
Type spec location:MNB
Main mass:Stefan Ralew
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
Ralew: Stefan Ralew, Kunibertstraße 29, 12524 Berlin, Germany; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 111, in preparation (2022)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8559 approved meteorites from (Northwest Africa) (plus 1896 unapproved names)

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