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Northwest Africa 13582
Basic information Name: Northwest Africa 13582
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13582
Observed fall: No
Year found: 2019
Country: (Northwest Africa)
Mass:help 11.28 kg
Classification
  history:
Recommended:  Lunar (feldsp. breccia)    [explanation]

This is 1 of 312 approved meteorites classified as Lunar (feldsp. breccia).   [show all]
Search for other: Lunar meteorites
Comments: Approved 19 Nov 2020
Writeuphelp
Writeup from MB 109:

Northwest Africa 13582 (NWA 13582)

(Northwest Africa)

Purchased: Jun. 2019

Classification: Lunar meteorite (feldspathic breccia)

History: Purchased by Bo Zhang in Jun. 2019 from an anonymous dealer.

Physical characteristics: Small vesicles are visible in the hand specimen.

Petrography: Lithic clasts and mineral fragments (0.01 to 2 mm) set in an anorthositic matrix. Lithic clasts include anorthositic, gabbroic, noritic and impact melted clasts. Mineral fragments are dominated by pyroxene and minor olivine. Plagiocalse is highly Ca-rich (K2O < 0.025 wt%) while a few clasts contain relatively K-rich plagiocalse (K2O = 0.23-0.45 wt%). Some pyroxene grains exhibit exsolved lamella. Vesicles are common. Other accessory minerals include ilmenite, troilite and FeNi metal.

Geochemistry: Plagioclase (An95.5-99.3Or0-0.2, n=14; An85.0-90.7Or1.6-3.5, n=3), olivine (Fa19.6-34.9, FeO/MnO=83.3-98.2, n=7), low-Ca pyroxene (Fs16.5-47.8Wo2.4-13.2, FeO/MnO=48.2-62.7, n=11), Ca-rich pyroxene (Fs8.8-52.8Wo27.2-44.3, FeO/MnO=43.6-73.4, n=11).

Classification: The texture and mineral composition are consistent with lunar feldspathic breccias.

Data from:
  MB109
  Table 0
  Line 0:
Place of purchase:Mauritania
Date:P Jun. 2019
Mass (g):11280
Pieces:1
Class:Lunar (feldsp. breccia)
Fayalite (mol%):25.4±7.4 (n=7)
Ferrosilite (mol%):29.9±10.6 (n=11); 21.6±13.0 (n=11)
Wollastonite (mol%):4.6±3.4 (n=11); 38.4±5.9 (n=11)
Classifier:Wu Y.
Type spec mass (g):20
Type spec location:PMO
Main mass:Bo Zhang
Comments:Submitted by Hsu W.
Institutions
   and collections		 PMO: Purple Mountain Observatory, Nanjing, China (institutional address; updated 16 Dec 2011)
Catalogs:
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
Find references in NASA ADS:
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Photos:
CreditPhotos
Public domain photographs:
Weibiao Hsu      
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9013 approved meteorites from (Northwest Africa) (plus 1869 unapproved names)

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