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Northwest Africa 12532
Basic information Name: Northwest Africa 12532
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12532
Observed fall: No
Year found: 2019
Country: (Northwest Africa)
Mass:help 2 kg
Classification
  history:
Recommended:  LL6    [explanation]

This is 1 of 2754 approved meteorites (plus 1 unapproved name) classified as LL6.   [show all]
Search for other: LL chondrites, LL chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 11 Oct 2019
Writeuphelp
Writeup from MB 108:

Northwest Africa 12532 (NWA 12532)

(Northwest Africa)

Purchased: 2019

Classification: Ordinary chondrite (LL6)

History: One large uncrusted 2000g stone was found in Western Sahara in 2018. John Sinclair purchased the sample from a meteorite prospector at the Tucson Gem and Mineral Show in 2019.

Physical characteristics: Sample lacks a fusion crust, is yellowish-orange in color and crystalline. Cut face shows a granoblastic texture and dark colored-opaque grains.

Petrography: Description and classification (A. Love, App): Sample shows a granoblastic texture composed of 517 µm olivine, low-Ca pyroxene, twinned Cpx and twinned plagioclase that meet at 120º grain boundaries. Additional minerals are phosphates, troilite, chromite, and oxidized FeNi metal grains.

Geochemistry: (A. Love, App) Olivine: Fa27.6±0.1, Fe/Mn 51.9±1.3, n=10; low Ca pyroxene Fs24.2±0.2Wo1.8±0.0, Fe/Mn=34.8±0.6, n=8; high Ca pyroxene Fs9.7±0.2Wo43.6±0.3, N=3; plagioclase Ab57.4±0.3Or0.3±0.0, N=3.

Classification: LL6. Sample is an LL based on mineral compositions, and is type 6 based on recrystallized granoblastic texture.

Specimens: John Sinclair holds the main mass. One endcut weighing 20.05 g and a polished mount and thin section are on deposit at App.

Data from:
  MB108
  Table 0
  Line 0:
Place of purchase:Rissani
Date:P 2019
Mass (g):2000
Pieces:1
Class:LL6
Shock stage:C-S2
Weathering grade:W3
Fayalite (mol%):27.6±0.1
Ferrosilite (mol%):24.2±0.2; 9.7±0.2
Wollastonite (mol%):1.8±0.0; 43.6±0.3
Classifier:A. Love, App
Type spec mass (g):20.05
Type spec location:App
Main mass:J. Sinclair
Finder:Unknown
Comments:Submitted by Anthony Love
Institutions
   and collections
App: Department of Geology, 572 Rivers St., Appalachian State University, Boone, NC 28608, United States (institutional address; updated 7 Mar 2013)
Catalogs:
References: Published in Meteoritical Bulletin, no. 108, in preparation (2019)
Find references in NASA ADS:
Find references in Google Scholar:
Photos:
CreditPhotos
Public domain photographs:
Anthony Love   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7035 approved meteorites from (Northwest Africa) (plus 2000 unapproved names)

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