Mineral replacement rate of olivine by chrysotile and brucite under high alkaline conditions

نویسندگان

  • Romain Lafay
  • German Montes-Hernandez
  • Emilie Janots
  • Rodica Chiriac
  • Nathaniel Findling
  • François Toche
  • Francois Toche
چکیده

HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L’archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d’enseignement et de recherche français ou étrangers, des laboratoires publics ou privés. Mineral replacement rate of olivine by chrysotile and brucite under high alkaline conditions Romain Lafay, German Montes-Hernandez, Emilie Janots, Rodica Chiriac, Nathaniel Findling, François Toche

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منابع مشابه

Mineral replacement rate of olivine by chrysotile and brucite under high 1 alkaline conditions

3 Romain Lafay , German Montes-Hernandez , Emilie Janots, Rodica Chiriac, Nathaniel 4 Findling, Francois Toche 5 6 1 Institut des Sciences de la Terre (ISTerre), UJF-CNRS, F-38041, Grenoble I, Cedex 9, 7 France 8 2 Université Lyon 1, Laboratoire des Multimatériaux et Interfaces UMR CNRS 5615, 43 bd 9 du 11 novembre 1918, 69622 Villeurbanne Cedex, France 10 11 12 * Corresponding authors: Romain ...

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At the base of Shemshak Formation in the south Azadshahr area, some igneous mafic rocks are discovered recently  as olivine gabbro bodies and pegmatoid alkali-diorite dikes. Rock-forming minerals of olivine gabbro includes olivine, clinopyroxene and plagioclase, alkali-diorites are composed of large amphiboles and plagioclase. Major and trace elements characteristics of these rocks indicate the...

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Control of the Products of Serpentinization by the FeMg 1 Exchange Potential of Olivine and Orthopyroxene

It is argued that the high-Mg content (mg-number1⁄4 95 3) of the serpentine minerals in serpentinized peridotite is a consequence of the environmental FeMg 1 exchange potential imposed on the system by the abundance of olivine and orthopyroxene. Mass balance in the serpentinization reaction then requires the precipitation of an ironrich mineral that in most cases is magnetite.This causes hydrog...

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The ultramafic rocks from the Takht-e-Soleyman metamorphic complex, in Precambrian age, are classified as serpentinized metaperidotites and serpentinites, based on degree of serpentinization. Serpentine forms more than 90 volume% of the serpentinites. On the basis of serpentine polymorphs, textural relations and micro-structure features, variety of serpentinites are determined as massive serpen...

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Chemistry of mafic minerals and thermobarometry of Bazman Quaternary volcanic rocks

  Abstract 1-Introduction Bazman volcano is located on Chgay - Makran magmatic arc. This magmatic arc with east-west trend is 500 km long and 150 km wide and extends from southeastern Iran to southwestern Pakistan. Early evolution of the Makran zone from the upper Oligocene to the upper Miocene is characterized by turbidite sediments deposited on the oceanic crust. There are several quaternary...

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تاریخ انتشار 2018