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Northwest Africa 8560
Basic information Name: Northwest Africa 8560
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8560
Observed fall: No
Year found: 2013
Country: (Northwest Africa)
Mass:help 139.7 g
Classification
  history:
Meteoritical Bulletin:  MB 103  (2014)  H5-melt breccia
Recommended:  H5-melt breccia    [explanation]

This is 1 of 20 approved meteorites classified as H5-melt breccia.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Melted chondrites, Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 18 Oct 2014
Writeuphelp
Writeup from MB 103:

Northwest Africa 8560 (NWA 8560)

(Northwest Africa)

Purchased: 2013

Classification: Ordinary chondrite (H5, melt breccia)

History: Purchased by Brahim Tahiri from a Moroccan hunter and sent to his partner Sean Tutorow for classification, April, 2013.

Physical characteristics: Single stone, weathered exterior. Saw cut reveals very fine-grained, dark-gray shock melt with rafted angular fragments of chondrite material up to 1 cm.

Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows domains of quench shock melt with islands of ordinary chondrite clasts with some equilibrated chondrules, plagioclase grains <50 μm, FeNi metal, troilite, Fe-oxide, chromite.

Geochemistry: (C. Agee and N. Muttik, UNM) Olivine Fa19.1±0.8, Fe/Mn=40±2, n=11; low-Ca pyroxene Fs16.9±0.9Wo1.9±0.3, Fe/Mn=24±2, n=10; shock melt (20 μm electron microprobe beam) SiO2=47.73±1.71, TiO2=0.14±0.03, Al2O3=3.76±1.01, Cr2O3=0.54±0.11, MgO=28.16±2.17, MnO=0.38±0.03, FeO=12.78±0.30, CaO=2.28±0.72, Na2O=1.67±0.50, K2O=0.22±0.06 (all wt%), n=8.

Classification: H5-melt breccia, weathering grade W2.

Specimens: 20.1 g including a probe mount on deposit at UNM, Sean Tutorow holds the main mass.

Data from:
  MB103
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2013
Mass (g):139.7
Pieces:1
Class:H5-melt breccia
Weathering grade:W2
Fayalite (mol%):19.1
Ferrosilite (mol%):16.9
Wollastonite (mol%):1.9
Classifier:C. Agee, UNM
Type spec mass (g):20.1
Type spec location:UNM
Main mass:Sean Tutorow
Comments:Field name G587; submitted by C. Agee, UNM
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 Meteoritical Bulletin, no. 103, MAPS 52, 1014, May 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12888/full
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

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

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