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Northwest Africa 16102
Basic information Name: Northwest Africa 16102
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 16102
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 6.41 kg
Classification
  history:
Meteoritical Bulletin:  MB 112  (2024)  LL6-melt breccia
Recommended:  LL6-melt breccia    [explanation]

This is 1 of 23 approved meteorites classified as LL6-melt breccia.   [show all]
Search for other: LL chondrites, LL chondrites (type 4-7), Melted chondrites, Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 3 Sep 2023
Writeuphelp
Writeup from MB 112:

Northwest Africa 16102 (NWA 16102)

(Northwest Africa)

Purchased: 2021

Classification: Ordinary chondrite (LL6, melt breccia)

History: Purchased by Aziz Habibi in 2021.

Physical characteristics: Single stone, no fusion crust. Saw cut slice reveals a breccia with coarse clasts bounded by recrystallized shock melt zones. Clasts have dark gray-green coloration while the melt veins appear fine-grained and lighter in color. No macroscopic grains with metallic luster observed.

Petrography: (A. Ross and C. Agee, UNM) Microprobe examination and reflected light microscopy reveal the presence of relict chondrules some of which have plagioclase grains up to 50 microns in size. Melt rock veinlets with Fe-sulfide, Fe,Ni-metal and oxidized iron are pervasive. Some sulfide is Ni-bearing. Trace amounts of Cu-Zn alloy were detected.

Geochemistry: (A. Ross, UNM) Olivine Fa30.1±0., Fe/Mn=61±4, n=10; low-Ca pyroxene Fs24.5±0.2Wo2.3±0.1, Fe/Mn=36±2, n=7. Oxygen isotopes (K. Ziegler, UNM): 3 acid-washed fragments analyzed by laser fluorination gave δ18O= 6.364, 5.534, 5.534; δ17O= 4.347, 4.033, 4.032; Δ17O= 0.987, 1.111, 1.110 (linearized, all per mil, TFL slope=0.528).

Classification: Ordinary chondrite LL6-melt breccia.

Specimens: 20 g on deposit at UNM, Aziz Habibi holds the main mass.

Data from:
  MB112
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2021
Mass (g):6409
Pieces:1
Class:LL6-melt breccia
Shock stage:high
Weathering grade:moderate
Fayalite (mol%):30.1±0.4
Ferrosilite (mol%):24.5±0.2
Wollastonite (mol%):2.3±0.1
Classifier:C. Agee, UNM
Type spec mass (g):20
Type spec location:UNM
Main mass:Aziz Habibi
Comments:Fieldname MVCH-614; submitted by C. Agee
Plots: O isotopes:  
Institutions
   and collections		 UNM: Institute of Meteoritics MSC03 2050 University of New Mexico Albuquerque NM 87131-1126 USA, United States; Website (institutional address; updated 12 Feb 2015)
Catalogs:
References: Published in Gattacceca J., McCubbin F. M., Grossman J. N., Schrader D. L., Cartier C., Consolmagno G., Goodrich C., Greshake A., Gross J., Joy K. H., Miao B. and Zhang B. (2024) The Meteoritical Bulletin, no. 112. Meteoritics & Planetary Science 59, 1820–1823. ?
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9933 approved meteorites from (Northwest Africa) (plus 1837 unapproved names)

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