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NWA 10904 Meteorites • Classification L3.5 Chondrite • Authentic Space Dust Rocks • Teachers Class Learning Aid • Collection Piece w/ Case

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Item details

You are able to choose one or more of the specimens shown in the photos. Each specimen comes in a protective display case along with a business card sized COA. The bottom of each case is marked with that particular meteorites S. Tutorow collection number that corresponds with the number on the Meteorites COA.
This is an official meteorite from the S. Tutorow Collection. A respected meteorite supplier and author who upholds to the highest proviance standards in the world of Meteorites.

Below is information copied from the "The Meteoritical Society" website...........
Northwest Africa 10904 (NWA 10904)

(Northwest Africa)

Purchased: 2015

Classification: Ordinary chondrite (L3)

History: Purchased in 2015 by Brahim Tahiri in Morocco and sent to his partner Sean Tutorow for analysis.

Physical characteristics: Eleven identical appearing stones. Weathered fusion-crusted exterior. Saw cuts reveal well defined, densely packed chondrules, mean apparent diameter 600±200 μm, n=14.

Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows numerous porphyritic chondrules, most with glass or mesostasis. Abundant fine-grained, opaque matrix.

Geochemistry: (C. Agee and M. Spilde, UNM) Olivine Fa22.3±10.4, Fe/Mn=58±21, Cr2O3=0.05±0.03 (wt%), n=30; low-Ca pyroxene Fs14.5±8.6Wo2.2±4.5, Fe/Mn=22±6, n=10; plagioclase An79.6Ab19.8Or0.6.

Classification: Ordinary chondrite (L3), subtype ~3.5 based on mean values of Fa and Fs and 1-sigma standard deviation, and on the ferroan olivine mean value of Cr2O3 and 1-sigma standard deviation, Chainpur (3.4) and Tieschitz (3.6) Reference:
Grossman J.N. and Brearley A.J. (2005) The onset of metamorphism in ordinary and carbonaceous chondrites. Meteorit. Planet. Sci. 40, 87-122.
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Specimens: 22.33 g including a probe mount on deposit at UNM, Sean Tutorow holds the main mass.

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