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Northwest Africa 10106
Basic information Name: Northwest Africa 10106
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10106
Observed fall: No
Year found: 2013
Country: Morocco
Mass:help 229 g
Meteoritical Bulletin:  MB 104  (2015)  H5
Recommended:  H5    [explanation]

This is 1 of 11988 approved meteorites (plus 23 unapproved names) classified as H5.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 31 Jul 2015
Writeup from MB 104:

Northwest Africa 10106 (NWA 10106)


Purchased: 2013

Classification: Ordinary chondrite (H5)

History: Dean Bessey purchased the meteorite in Erfound, Morocco. It was acquired by Michael Zielinski and brought to CWRU in 2013.

Physical characteristics: The full specimen was completely covered in a dark brown fusion crust. It is bulbous and approximately fist sized. Abundant metal can be seen in the cut section along with rare metal nodules that reach mm size. Chondrules are not well defined in the cut face. The section sample has a total mass of 228.8 g.

Petrography: In plane polarized light the meteorite is seen to consist of approximately 50% chondrules, 16% metal grains, 5% sulfide grains, with the remainder being a dark orange, rusty groundmass. Chondrules range in size from 0.2 mm to about 1.2 mm in diameter, although there is a small population of chondrules around the 0.1 mm size. The chondrules range in type from barred olivine, bladed pyroxene and poikilitic clastic. Metal grains range in size from 0.2 to 6 mm and sulfide grains are small, around 0.2 mm.

Geochemistry: Chondrules are primarily composed of olivine and pyroxene grains with rare areas of feldspathic glass. Olivine grains are Fa18.2 and pyroxene grains are Fs16.7. The metal nodules are primarily kamacite with a few zones of taenite. Laser ablation ICP-MS shows that the metal nodules are depleted in the siderophile elements, notably Re, Os, Ir, Ru, Pt, and Rh.

Specimens: A type specimen of 22.9 g is kept at CMNH. The main mass and a mm thick slab are in the possession of Michael Zielinski.

Data from:
  Table 0
  Line 0:
Place of purchase:Erfoud, Morocco
Date:P 2013
Mass (g):228.8
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):18.2±0.7 (N=58)
Ferrosilite (mol%):16.7±1.5 (N=54)
Wollastonite (mol%):1.5±0.2 (N=54)
Classifier:B. Radoman-Shaw, J. Karner, and R. Harvey, CWRU
Type spec mass (g):22.9
Type spec location:CMNH
Main mass:Michael Zielinski, Hiram, OH
Comments:Submitted by Brandon Radoman-Shaw
   and collections
Bessey: Dean Bessey ,P.O. Box 40810, Glenfield, Auckland 1310 , New Zealand; Website (private address)
CMNH: Cleveland Museum of Natural History, 1 Wade Oval Drive University Circle Cleveland OH 44106-1767, United States; Website (institutional address; updated 6 Oct 2014)
References: Published in Meteoritical Bulletin, no. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full
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     This is 1 of 2118 approved meteorites from Morocco (plus 32 unapproved names) (plus 1 impact crater)

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