Texture N°2 Martian meteorite Dunite

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Texture N°2 Martian meteorite Dunite

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Avec le nom attribué de NWA 2737, ce cumul olivine-chromite a été classé comme un dunite qui présente de nombreuses similitudes minéralogiques, chimiques et pétrographiques avec le premier chassignite martien connu qui est tombé à Chassigny, en France 1815.

Un troisième chassignite désigné NWA 8694 a été Classé au musée National d'Histoire Naturelle, Paris, France.


       texture 2-1 meteorite-mars.com   texture comparative 2-1 www.meteorite-mars.com

shocked.NWA 2737
NWA 2737 displays trace element abundances similar to Chassigny.
History: In August 2000, meteorite collectors discovered a stone fragmented into nine pieces (308 g, 128 g, 74 g, 47 g, 38 g, 6.4 g, 3.3 g, 2.0 g, and
4.3 g for a total mass of 611 g) in the western part of the Sahara. Petrography and Geochemistry: (P. Beck, Ph. Gillet, B. Reynard, B. van de Moortele, ENSL; J.A. Barrat, M. Bohn, I. Cotton, UBO) Olivine (Fo78.2–79.1; Mn/Fe = 0.018; ~89.6 vol%), chromite (4.6 vol%), low-Ca pyroxene (En78.5Wo2.7Fs18.8 to En76.6Wo3.2Fs20.2), high-Ca pyroxenes (En73.5Wo8.0Fs18.5 to En64.0Wo22.1Fs13.9; Mn/Fe 0.030 [total of low- and high-Ca pyroxene ~4.1 vol%]), and sanidine glass (~1.6 vol%) with traces of apatite. The texture is that of a cumulate dominated by mm-size anhedral to subhedral olivine crystals, sometimes poikilitically enclosed in augite

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There are only four Calcium poor Martian Meteorites in the world - ALH84001, Chassigny, Dhofar 378, and NWA 998.
Photo NWA 2737 (Diderot) kindly submitted by Carine Bidaut and Bruno Fectay. ... NWA 2737 (field name “Diderot”) is a dark black rock,.
There are only four Calcium poor Martian Meteorites in the world - ALH84001, Chassigny, Dhofar 378, and NWA 998.

THANK S www.meteorite.com/Erichs/catalog_english.htm

     textute 2-3 www.meteorite-mars.com   textute comparative 2-3 www.meteorite-mars.com

meteorite collectors discovered a stone fragmented into nine pieces
NWA 2737 History: In August 2000, meteorite collectors discovered a stone fragmented into nine pieces (308 g, 128 g, 74 g, 47 g, 38 g, 6.4 g, 3.3 g, 2.0 g, and 4.3 g for a total mass of 611 g) in the western part of the Sahara. Petrography and Geochemistry: (P. Beck, Ph. Gillet, B. Reynard, B. van de Moortele, ENSL; J.A. Barrat, ... Afficher la suite – à Météorite Chizé de Mars Communauté texture 1.

Vidéo_textureN°_02_Sud ouest_boule_de_feu-meteoriete-mars.com

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