Essays about: "apatit"

Showing result 6 - 10 of 18 essays containing the word apatit.

  1. 6. Rare-Earth Elements in the Swedish Alum Shale Formation: A Study of Apatites in Fetsjön, Västerbotten

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Fredrik Engström; [2019]
    Keywords : apatite; rare-earth elements; uranium; alum shales; caledonides; apatit; sällsynta jordartsmetaller; uran; alunskiffer; kaledoniderna;

    Abstract : The Caledonian alum shales of Sweden host a vast number of economically interesting metals. In Fetsjön, Västerbotten, the shales contain significant amounts of rare-earth elements, vanadium, molybdenum and uranium. READ MORE

  3. 7. An Innovative In-Tunnel Seismic Study for Sustainably Extracting Apatite Ore at the Siilinjärvi Mine, Eastern Finland

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Anna Donczew; [2019]
    Keywords : in-tunnel seismic; reflection seismic; traveltime tomography; carbonatites; shear zones; Siilinjärvi; tunnelseismik; reflektionsseismik; restidstomografi; karbonatiter; skjuvzoner; Siilinjärvi;

    Abstract : Siilinjärvi located in eastern Finland is presently the only phosphate mine with significant phosphorus production in western Europe. Phosphate rock and phosphorus are known as a critical raw material for the European Union due to their economic importance and being prone to the supply risks. READ MORE

  4. 8. A geophysical study of the Mertainen area : Modelling and interpretation of primarily aeromagnetic data

    University essay from Luleå tekniska universitet/Geovetenskap och miljöteknik

    Author : Tobias Ström; [2018]
    Keywords : ;

    Abstract : Nautanen Deformation Zone, is a prominent deformation zone in the Malmfälten area, which is of importance to understand for mineral exploration purposes. In spite of diverse geophysical data being available in Malmfälten and the good correlation between airborne measurements and geological observations, the area has not been fully investigated in detail using the aforementioned available data. READ MORE

  5. 9. A Petrological Investigation of the Host Rocks for the Kuj-Kiirunavaara Ore

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Holger Sandberg; [2018]
    Keywords : Kiirunavaara; optical mineralogy; hydrothermal alteration; electron microprobe; Kiirunavaara; optisk mineralogi; hydrotermal omvandling; elektron-mikrosond;

    Abstract : The Kiirunavaara mine hosts one of the world’s largest apatite-iron ore mineralisations. This ore body has been subject to large amounts of research as well as extensive mining. The ore body is situated between the syenitic foot wall and the rhyodacitic hanging wall, of which consists of differing mineralogy and characteristics. READ MORE

  6. 10. Behaviour of Boron Isotopes During Magmatic Degassing and Application to B-Rich Volcanic Glassfrom Lesbos, Greece

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Konstantinos Thomaidis; [2017]
    Keywords : boron isotopes; volcanic glass; SIMS; magmatic degassing; Lesbos Island; borisotoper; vulkaniskt glas; SIMS; magmatisk avgasning; Lesbos;

    Abstract : Boron is a fluid mobile trace element and is routinely employed as a tracer of slab-derived fluids in subduction zones since the heavy isotope (11B) preferentially partitions into the fluid phase during slab dehydration. However, it has been shown experimentally that boron isotopes (expressed as δ11B) can fractionate by up to several permil (‰) during subsequent magmatic evolution and degassing at high temperature, calling into doubt the fidelity of boron isotopes in volcanic glass as accurate tracers of slab degassing. READ MORE