Synthesis of amorphous MgO-rich peridotitic starting material for laser-heated diamond anvil cell experiments - application to iron partitioning in the mantle | INSTITUT DE PHYSIQUE DU GLOBE DE PARIS

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  Synthesis of amorphous MgO-rich peridotitic starting material for laser-heated diamond anvil cell experiments - application to iron partitioning in the mantle

Type de publication:

Journal Article

Source:

High Pressure Research, Volume 31, Ticket 1, p.199-213 (2011)

ISBN:

0895-7959

Numéro d'accès:

WOS:000288660500039

URL:

http://dx.doi.org/10.1080/08957959.2011.556631

Mots-clés:

aerodynamical levitation, glass, iron partitioning, peridotite, sol–gel, UMR 7154 ; Minéralogie ; experimental petrology

Résumé:

We report the preparation of the starting material reflecting the complex composition of the Earth's mantle. With this aim, we synthesized two types of material: sol–gel and glass obtained by aerodynamic levitation. Thanks to their high homogeneity and reactivity, these materials are suitable for experimental petrology under extreme conditions, conducted in laser-heated diamond anvil cell. We then used this mantle analog to investigate the iron partitioning between high pressure phases under lower mantle conditions during solid-state reaction and partial melting of the material. Iron preferentially partitions into the (Mg,Fe)O, but the presence of aluminum slightly enriches iron in the silicate phase (Kpv−fp=0.41±0.04) compared to similar experiments in an Al-free system.

Notes:

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