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Northwest Africa 15289
Basic information Name: Northwest Africa 15289
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 15289
Observed fall: No
Year found: 2019
Country: (Northwest Africa)
Mass:help 6.97 kg
Classification
  history:
Recommended:  Eucrite    [explanation]

This is 1 of 562 approved meteorites (plus 1 unapproved name) classified as Eucrite.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 14 Sep 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 15289 (NWA 15289)

(Northwest Africa)

Find: 2018

Classification: HED achondrite (Eucrite)

History: The meteorite was found in 2018 by the nomads in a desert of North West Africa and sold to meteorite dealer Mr. Aziz Moudani. In 2019 the meteorite was purchased on the mineral show in Beijing for Dedovsk Museum collection (DMUH).

Physical characteristics: Complete individual specimen of meteorite of 6967 g has polyhedral shape. The stone is 90% covered with black fusion crust. The broken surfaces show an igneous texture of the meteorite.

Petrography: The meteorite has coarse-grained subophitic texture and composes of anhedral grains of pyroxene (0.4 to 2.0 mm in size), and subhedral prismatic (0.1x1.5 mm) and anhedral grains (0.3 × 2 mm) of feldspar. Pyroxene grains are presented by pigeonite with rare sub-μm lamellae of high-Ca pyroxene, and by augite with numerous lamellae of low-Ca pyroxene. Accessory phases include an SiO2 phase, chromite, ilmenite, zircon, troilite, and Fe metal.

Geochemistry: Mineral compositions and geochemistry: Pyroxenes are Fs57.7±2.5Wo 6.4±2.1 (N=23); Fe/Mn=29 at.; and Fs30.1±1.1Wo39.6±1.1 (N=28); Fe/Mn=29 at.). Feldspar is An89.1±0.3Ab10.3±0.3 (N=10).

Classification: Eucrite, unbrecciated, weathering is minimal.

Specimens: Type specimen of 640.7 g and thin section are on deposit at Vernad. DMUH holds the main mass of 5696 g.

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Beijing
Date:2018
Mass (g):6967
Pieces:1
Class:Eucrite
Classifier:C. A. Lorenz, Vernad
Type spec mass (g):640.7
Type spec location:Vernad
Main mass:DMUH
Comments:Submitted by Cyril A. Lorenz
Institutions
   and collections
Vernad: Vernadsky Institute of Geochemistry and Analytical Chemistry, Russia (institutional address; updated 21 Feb 2016)
Beijing: Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China (institutional address; updated 16 Oct 2011)
DMUH: Dedovsk Museum of Universe History, Russia; Website (institutional address; updated 26 Sep 2011)
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 8674 approved meteorites from (Northwest Africa) (plus 1882 unapproved names)

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