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Northwest Africa 12589
Basic information Name: Northwest Africa 12589
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12589
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass:help 327 g
Classification
  history:
Recommended:  LL7    [explanation]

This is 1 of 59 approved meteorites classified as LL7.   [show all]
Search for other: LL chondrites, LL chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 11 May 2019
Writeuphelp
Writeup from MB 108:

Northwest Africa 12589 (NWA 12589)

(Northwest Africa)

Purchased: 2018 Oct

Classification: Ordinary chondrite (LL7)

Petrography: (K. Metzler, IfP) Brecciated ordinary chondrite with chondritic lithic clasts up to 7 mm. Clasts are recrystallized and contain chondrule relicts. Many secondary feldspar grains with sizes of 100 µm and larger. Rare (oxidized) metal with a maximum size of 1 mm.

Geochemistry: Mineral compositions and geochemistry: (K. Metzler, IfP) The mean olivine composition is Fa31.1±0.3 (30.2-31.5; n=14). The mean low-Ca pyroxene composition is Fs25.2±0.3 Wo2.9±0.5 (Fs24.5-25.6 Wo2.1-3.8; n=17).

Classification: LL chondrite based on mineral chemistry. Petrologic type 7 based on the equilibrated state of olivine and pyroxene, the large grain size of secondary plagioclase, and the high CaO concentration in low-Ca pyroxene.

Data from:
  MB108
  Table 0
  Line 0:
Place of purchase:Bouizakarne, Morocco
Date:P 2018 Oct
Mass (g):327
Pieces:1
Class:LL7
Shock stage:S2
Weathering grade:W3
Fayalite (mol%):31.1±0.3
Ferrosilite (mol%):25.2±0.3
Wollastonite (mol%):2.9±0.5
Classifier:K. Metzler, IfP
Type spec mass (g):20
Type spec location:IfP, Münster
Main mass:Nor Eddine Azelmat, Morocco
Comments:Submitted by K. Metzler, IfP
Institutions
   and collections
IfP: Institut für Planetologie, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany (institutional address; updated 23 Jan 2012)
Catalogs:
References: Published in Meteoritical Bulletin, no. 108, in preparation (2019)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6730 approved meteorites from (Northwest Africa) (plus 2025 unapproved names)

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