NWA 12464

 

 

NWA 12464

Found 2018

Chondrite

LL3.15

Specimen is a 4.12g slice



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NWA 12464 is one of the only 7 meteorites classified as LL3.15 (with 2 from Antartica - Yamato 791558 and Yamato 791324 - probably paired, 1 from India - Bishunpur - and 4 from Sahara - NWA 10598, 10650, 12462 and then 12464)...

 

 

 

Northwest Africa 12464
Basic information Name: Northwest Africa 12464
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12464 
Observed fall: No
Year found: 2018
Country: (Northwest Africa) 
Mass: 597 g
Classification
  history:
Recommended:   LL3.15    

This is 1 of 7 approved meteorites classified as LL3.15.   [show all]
Comments: Approved 22 Feb 2019
Writeup
Writeup from MB 108: 

Northwest Africa 12464 (NWA 12464)

(Northwest Africa)

Purchased: 2018 March

Classification: Ordinary chondrite (LL3.15)

Petrography: Chondrite with packed, well-delineated chondrules, with average apparent diameter 690±360 μm (n=40). Main opaques are metal, troilite, and their terrestrial weathering products. Chondrule mesostasis is devitrified. Zoned olivine.

Geochemistry: Olivine Fa12.8±9.1, Fa PMD 56%, range Fa0.4-32.6 (n=16). Cr2O3 in ferroan olivine 0.20±0.18 wt% (n=12). Orthopyroxene Fs8.2±7.4Wo1.6±1.1 (n=7). Magnetic susceptibility log χ (× 10-9 m3/kg) = 3.95.

Classification: LL3.15. LL group from magnetic susceptibility. Subtype from Cr2O3 content of ferroan olivine.

Specimens: Type specimen at CEREGE

Data from:
  MB108
  Table 0
  Line 0:
Place of purchase: Zagora, Morocco
Date: P 2018 March
Mass (g): 597
Pieces: 2
Class: LL3.15
Weathering grade: W3
Fayalite (mol%): 12.8±9.1 (n=16)
Ferrosilite (mol%): 8.2±7.4 (n=7)
Wollastonite (mol%): 1.6±1.1
Magnetic suscept.: 3.95
Classifier: J. Gattacceca, L.K. Ruggiu, CEREGE
Type spec mass (g): 24.53
Type spec location: CEREGE
Main mass: Kuntz
Comments: work name K388; submitted by J. 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)

 
 

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