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Marsa Alam 006
Basic information Name: Marsa Alam 006
     This is an OFFICIAL meteorite name.
Abbreviation: MA 006
Observed fall: No
Year found: 2013
Country: Egypt
Mass:help 97 g
Meteoritical Bulletin:  MB 105  (2016)  H3-5
Recommended:  H3-5    [explanation]

This is 1 of 81 approved meteorites classified as H3-5.   [show all]
Search for other: H chondrites, H chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 23 Aug 2016
Writeup from MB 105:

Marsa Alam 006 (MA 006)        25°12.90’N, 34°46.34’E

Al Bahr al Ahmar, Egypt

Find: 2013 Nov 25

Classification: Ordinary chondrite (H3-5)

History: The meteorite was found 2 m from Marsa Alam 002 by Mr. T. Kryachko on a small plateau near the wadi Marsa Ijli, Egypt, in November 2013.

Physical characteristics: The stone is a meteorite fragment with the relics of fusion crust; a total mass of the sample is 97 g.

Petrography: A host lithology of the meteorite consists of C, RP, BO, PO, and BOP chondrules, 100-1000 μm in size, with average diameter 440 μm (n=95, 60 vol%), fine-grained cataclastic aggregate of olivine, pyroxene and minor partly devitrified feldspatic glass (40 vol%), accessory troilite (1.8 vol%), FeNi metal (0.6 vol%), and chromite. FeNi hydroxides are abundant in the cataclastic aggregate. Clasts 1.5-3 mm in size (29 vol%) have distinct boundaries with the host and are composed of chondrule fragments (~80 vol%), fragments of olivine, pyroxene, minor feldspar, and recrystallized silicate matrix. Other phases are FeNi-hydroxides (10 vol%) and troilite (1 vol%); FeNi metal is accessory. The glass in chondrules is devitrified.

Geochemistry: (N. N. Kononkova, Vernad) host lithology: Fa17.5±3.7 (N=45; PMD Fa=21.3); Fs15.4±3.9Wo1.3±1.0 (N=37), metal (wt%): Ni=6.43; Co=0.59; troilite Ni=0.02, Cr=0.03, Co=0.05; clasts: Fa18.6±0.2 (N=10; PMD Fa=1.0); Fs16.2±1.3Wo1.2±1.2 (N=10); metal (wt%): Ni=7.24; Co=0.64; troilite Ni=0.15, Cr=0.10, Co=0.09.

Classification: H3-5 breccia. On the basis of PMD Fa and texture, the host lithology is approximately sub-type H3.7; the clasts are type H5.

Specimens: The type specimen of 23.7 g and thin polished section are on deposit at Vernad. Mr. T. V. Kryachko holds a main mass of the meteorite.

Data from:
  Table 0
  Line 0:
State/Prov/County:Al Bahr al Ahmar
Date:2013 Nov 25
Mass (g):97
Shock stage:S1
Weathering grade:W4
Fayalite (mol%):17.5±3.7, 18.6±0.2
Ferrosilite (mol%):15.3±3.9, 16.2±1.3
Wollastonite (mol%):1.3±1.0, 1.2±1.2
Classifier:C. A. Lorenz, Vernad
Type spec mass (g):23.7
Type spec location:Vernad
Main mass:Mr. T. V. Kryachko, bredfield@mail.ru
Finder:Mr. T. V. Kryachko
Comments:Field Name: TM-B; submitted by C. A. Lorenz
   and collections
Vernad: Vernadsky Institute of Geochemistry and Analytical Chemistry, Russia (institutional address; updated 21 Feb 2016)
References: Published in Meteoritical Bulletin, no. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full
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Photos from the Encyclopedia of Meteorites:
Timur Kryachko   

     Recommended::   (25° 12' 54"N, 34° 46' 20"E)

     This is 1 of 42 approved meteorites from Al Bahr al Ahmar, Egypt
     This is 1 of 96 approved meteorites from Egypt (plus 12 unapproved names) (plus 1 impact crater)
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