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Showing result 1 - 5 of 38 swedish dissertations matching the above criteria.

  1. 1. Microbe-mineral interactions in soil : Investigation of biogenic chelators, microenvironments and weathering processes

    Author : Engy Ahmed; Sara Holmström; Roger Finlay; Stockholms universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; Podzol; Biotite; Apatite; Oligoclase; Microbial attachment; Siderophores; Soil microorganisms; geokemi; Geochemistry;

    Abstract : The interplay between geology and biology has shaped the Earth during billions of years. Microbe-mineral interactions are prime examples of this interplay and underscore the importance of microorganisms in making Earth a suitable environment for all forms of life. READ MORE

  2. 2. A theoretical and experimental study on tschermak substitution in the assemblage muscovite+biotite+chlorite+quartz

    Author : Madis Roots; Uppsala universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP;

    Abstract : .... READ MORE

  3. 3. The Stollberg ore field - petrography, lithogeochemistry, mineral chemistry, and ore formation

    Author : Magnus Ripa; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; metamorphic; exhalative; hydrothermal; volcanogenic; skarn; magnetite; galena; sphalerite; Sweden; Bergslagen; Paleoproterozoic; deposit; mineralogy; geochemistry; Petrology; Petrologi; mineralogi; geokemi;

    Abstract : The Paleoproterozoic Fe-Pb-Zn-Mn(-Ag) Stollberg deposit is situated in the Bergslagen region of south-central Sweden. 6.65 Mt of sphalerite, galena and manganiferous skarn magnetite ore occur as disseminations and semi-massive to massive ore bodies hosted by volcanogenic sediments and carbonate rocks. READ MORE

  4. 4. Dissolution Kinetics and Alteration Products of Micas and Epidote in Acidic Solutions at Room Temperature

    Author : Birgitta Estmark Kalinowski; Per Aagaard; Stockholms universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; Earth sciences; Geovetenskap; Mineralogy; Petrology and Geochemistry; mineralogi; petrologi och geokemi;

    Abstract : The reaction kinetics of the weathering of several phyllosilicates and one sorosilicate were stud ied experimentally. The alteration products were characterised by various methods in clud ing XRD, HRTEM, SEM, FTIR, NMR and Mössbauer spectroscopy. READ MORE

  5. 5. The nature of gold in the Aitik Cu-Au deposit : implications for mineral processing and mine planning

    Author : Monika Sammelin; Luleå tekniska universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Malmgeologi; Ore Geology;

    Abstract : The Aitik mine is a large Cu-Au producer in Europe with an annual production of 28 million tons of ore and a planned expansion of production to 36 million tons of ore until year 2013. Large ongoing investments are done in the mine and a new processing plant is built to manage the capacity increase. READ MORE