Sökning: "Mineralvetenskap"

Hittade 3 avhandlingar innehållade ordet Mineralvetenskap.

  1. 1. Dissolution of fluorite type surfaces as analogues of spent nuclear fuel : Production of suitable analogues and study the effect of surface orientation on dissolution

    Författare :Jose Godinho; Sandra Piazolo; Tonci Balic-Zunic; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; fluorite; spent nuclear fuel; crystal structure; CeO2; CaF2; crystal orientation; topography; confocal profilometry; Mineralogy; Mineralvetenskap; Geology; geologi;

    Sammanfattning : It is accepted worldwide that the best final solution for spent nuclear fuel is to bury it in deep geological repositories. Despite the physical and chemical barriers that are supposed to isolate the nuclear waste for at least 100.000 years, some uncertainty factors may cause underground water to get in contact with the nuclear waste. LÄS MER

  3. 2. Hydrogen diffusion and storage mechanisms in diopside

    Författare :Rickard Sundvall; Henrik Skogby; Alasdair Skelton; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Mineralogy; Mineralvetenskap; mineralogi; petrologi och geokemi; Mineralogy; Petrology and Geochemistry;

    Sammanfattning : Hydrogen is a widespread trace element in many nominally anhydrous minerals (minerals without water or hydroxyl ions in their structural formula) from the Earth's crust and mantle. The hydrogen is normally incorporated in the form of hydroxyl ions and can be regarded as structurally bound water. LÄS MER

  4. 3. Water as a trace component in mantle pyroxene: Quantifying diffusion, storage capacity and variation with geological environment

    Författare :Rickard Sundvall; Henrik Skogby; Alasdair Skelton; Eugen Libowitzky; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; pyroxene; mantle mineralogy; water in nominally anhydrous minerals; iron redox-reaction; kinetics; water zonation; FTIR imaging; re-hydration capacity; Mineralogy; Mineralvetenskap; Mineralogy; Petrology and Geochemistry; mineralogi; petrologi och geokemi;

    Sammanfattning : In this study, distribution and diffusion of water in pyroxene are examined in an effort to explain the water content variation observed in natural pyroxene. Water is a common trace component in many nominally anhydrous minerals (NAMs) from the Earth's crust and mantle and greatly impacts their physical properties. LÄS MER