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Northwest Africa 11752
Basic information Name: Northwest Africa 11752
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11752
Observed fall: No
Year found: 2017
Country: (Northwest Africa)
Mass:help 39.5 g
Classification
  history:
Recommended:  LL3.05    [explanation]

This is 1 of 4 approved meteorites classified as LL3.05.   [show all]
Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 19 Apr 2018
Writeuphelp
Writeup from MB 107:

Northwest Africa 11752 (NWA 11752)

(Northwest Africa)

Purchased: 2017

Classification: Ordinary chondrite (LL3.05)

Physical characteristics: Dark brown stone. Cut surface reveals packed well-defined chondrules in a brown matrix.

Petrography: (J. Gattacceca, H. Pourkhorsandi, CEREGE; Lydie Bonal, IPAG) Large and closely packed chondrules. Opaques are FeNi minerals and troilite. Based on the structural order of the polyaromatic matter assessed by Raman spectroscopy, this meteorite appears to be as metamorphosed as ALHA 77307 (CO3.05). The Raman spectroscopy parameters of interest are FWHM-D (cm-1)=210.9±14.8, ID/IG=0.95±0.05 (see Bonal et al. 2016, GCA 189:312-337, figure 7).

Geochemistry: Olivine Fa16.8±5.4, range Fa8.6-24.9, PMD 27% (N=6), Cr2O3 in ferroan olivine 0.45±0.05 wt% (N=6). Orthopyroxene Fs10.4±8.4Wo1.6±1.3 (N=4). Magnetic susceptibility log χ (× 10-9 m3/kg) = 4.00.

Classification: LL3.05. Subtype from Raman spectroscopy and Cr2O3 content in ferroan olivine.

Specimens: Type specimen at CEREGE. Main mass with Kuntz.

Data from:
  MB107
  Table 0
  Line 0:
Place of purchase:Erfoud
Date:P 2017
Mass (g):39.5
Pieces:1
Class:LL3.05
Weathering grade:W3
Fayalite (mol%):16.8±5.4 (N=6)
Ferrosilite (mol%):10.4±8.4 (N=4)
Wollastonite (mol%):1.6±1.3
Magnetic suscept.:4.00
Classifier:J. Gattacceca, H. Pourkhorsandi, CEREGE
Type spec mass (g):8.14
Type spec location:CEREGE
Main mass:Kuntz
Comments:work name K340; submitted by Jerome Gattacceca
Institutions
   and collections
CEREGE: CEREGE BP 80 Avenue Philibert, Technopole de l'Arbois 13545 Aix-en-Provence Cedex 4 France, France (institutional address; updated 29 Oct 2018)
Kuntz: Fabien Kuntz, France; Website (private address)
IPAG: Institut de Planétologie et d’Astrophysique de Grenoble 414, Rue de la Piscine Domaine Universitaire 38400 St-Martin d’Hères , France (institutional address; updated 1 Aug 2013)
Catalogs:
References: Published in Meteoritical Bulletin, no. 107, in preparation (2018)
Find references in NASA ADS:
Find references in Google Scholar:
Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Mike Markowitz   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6781 approved meteorites from (Northwest Africa) (plus 2061 unapproved names)

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