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Northwest Africa 15860
Basic information Name: Northwest Africa 15860
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 15860
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass:help 195 g
Classification
  history:
Recommended:  LL3    [explanation]

This is 1 of 469 approved meteorites classified as LL3.   [show all]
Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 10 Nov 2023
Writeuphelp
Writeup from MB 112:

Northwest Africa 15860 (NWA 15860)

(Northwest Africa)

Purchased: 2018

Classification: Ordinary chondrite (LL3)

History: Purchased in December 2018 by Chalom Malka from Hassan O. Agadir in Morocco.

Physical characteristics: Single stone with slightly weathered dark brown fusion crust.

Petrography: (D. Sheikh, Cascadia) Specimen is comprised of ~0.8 mm-sized chondrules (largest size ~2.7 mm, n=52) set within a mostly opaque, slightly fine-grained matrix containing accessory Fe-Ni metal and troilite.

Geochemistry: Olivine (Fa18.2±13.1, n=18), Low-Ca Pyroxene (Fs4.5±2.3Wo2.3±1.6, range Fs1.3-9.7Wo0.6-5.3, n=20).

Classification: Ordinary Chondrite (LL3)

Specimens: 21.1 g at Cascadia, main mass with Chalom Malka.

Data from:
  MB112
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2018
Mass (g):195
Pieces:10
Class:LL3
Shock stage:S2
Weathering grade:low
Fayalite (mol%):18.2±13.1 (n=18)
Ferrosilite (mol%):4.5±2.3
Wollastonite (mol%):2.3±1.6
Classifier:D. Sheikh, Cascadia
Type spec mass (g):21.1
Type spec location:Cascadia
Main mass:Chalom Malka
Comments:CML 1547; submitted by Daniel Sheikh
Institutions
   and collections		 Cascadia: Cascadia Meteorite Laboratory, Portland State University, Department of Geology, Room 17 Cramer Hall, 1721 SW Broadway, Portland, OR 97201, United States; Website (institutional address; updated 28 Oct 2011)
Catalogs:
References: Published in Meteoritical Bulletin, no. 112, in preparation (2023)
Find references in NASA ADS:
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Photos:
CreditPhotos
Public domain photographs:
Daniel Sheikh      
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9429 approved meteorites from (Northwest Africa) (plus 1876 unapproved names)

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