Sökning: "Framboidal pyrite"

Hittade 4 uppsatser innehållade orden Framboidal pyrite.

  1. 1. The geochemical status of the surface water and the sediments in the estuary of the Sangis River, Kalix, Sweden

    Master-uppsats, Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

    Författare :Anton Sandberg; [2023]
    Nyckelord :Framboidal pyrite; dredging; Sangis River; estuary; redox ladder; sediment; sediment cores; SEM-EDS;

    Sammanfattning : It has been common in forestry and agriculture to drain waterlogged areas through ditching in order to cultivate them. The ditches that drain water are usually connected to some watercourse, such as a river. LÄS MER

  3. 2. Acid Sulphate Soil and Framboidal Pyrite in Northern Sweden

    Master-uppsats, Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

    Författare :Hind Rizq; [2020]
    Nyckelord :Acid Sulphate soil; Framboidal pyrite; Cubic pyrite; Organic matter; Skellefteå; Luleå;

    Sammanfattning : A soil profile was taken close to Skellefteå in Västerbotten, northern Sweden. The profile has an upper oxidised zone, 30 cm thick, underlain by a transitions zone, in this paper called accumulation zone, and a reduced zone at 160 cm depth. LÄS MER

  4. 3. Mineralogical and Geochemical Study of Acid Mine Drainage from 100 Years of Coal Mining in Svalbard (78° N)

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

    Författare :Andreas Rehn; [2020]
    Nyckelord :Acid rock drainage; Acid mine drainage; coal mine waste; Pyrite; Arctic; Svalbard; Spitzbergen;

    Sammanfattning : Waste rock piles from coal mining of tertiary bituminous coal in Longyearbyen, Svalbard, show sulfide oxidation and subsequent acid mine drainage (AMD) production. The aim was to establish deeper understanding of AMD prediction based on Mineralogy and Geochemistry of coal and AMD samples. LÄS MER

  5. 4. Mineralogical speciation of sulfur in acid sulfate soils from Luleå, Sweden

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Geovetenskap och miljöteknik

    Författare :Niklas Gunnarsson; [2018]
    Nyckelord :acid sulfate soil; metal leakage; low pH; SEM; elemental sulfur; framboidal pyrite;

    Sammanfattning : Marine sulfide – bearing sediments that oxidize when in contact with oxygen and leach outelements in high concentrations to small watercourses have been a problem for many years allover the world especially around the Bothnian Bay. The purpose of this study was to furtherinvestigate the sulfur mineralogy present in acid sulfate soils in the area of Luleå, Sweden. LÄS MER