Essays about: "Electron Microprobe Analysis"

Showing result 11 - 15 of 18 essays containing the words Electron Microprobe Analysis.

  1. 11. Ore mineralogy and silver distribution at the Rävliden N volcanogenic massive sulphide deposit, Skellefte district, Sweden

    University essay from Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

    Author : Simon Johansson; [2017]
    Keywords : Rävliden N; Boliden Mineral AB; Volcanogenic massive sulphide deposit; Ore mineralogy; Silver; Remobilisation;

    Abstract : The Rävliden North deposit (Rävliden N) is a volcanogenic massive sulphide (VMS) deposit in the western part of the Skellefte district, northern Sweden. The district is one of Sweden’s major metallogenic provinces with a significant amount of VMS deposits. READ MORE

  3. 12. Towards a Tephrochronology for the Lakselv Peat Sequence in Finnmark County, Northern Norway

    University essay from Stockholms universitet/Institutionen för naturgeografi

    Author : Anny Höglund; [2017]
    Keywords : Tephra; Tephrochronology; Lakselv; Norway; Jan Mayen; São Miguel; Electron Microprobe Analysis; Density Separation;

    Abstract : To provide an increased breadth in the knowledge of tephra dispersal, this pilot study examines a peat core from Lakselv in Finnmark County in northern Norway. Peat samples are exposed to burning, HCl, density separation and polarized light microscopy. One sample from a depth of 37.5-40 cm was analysed using an electron microprobe analyser (EMPA). READ MORE

  4. 13. Magma Storage of the Alkaline Tejeda Cone Sheet Swarm, Gran Canaria, Spain

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Max Jensen; [2016]
    Keywords : Gran Canaria; Tejeda cone sheet swarm; syenite; magma storage; thermobarometry; clinopyoxene; Gran Canaria; Tejeda inverterade kon-intrusioner; syenit; magma förvar; termobarometri; klinopyroxen;

    Abstract : Volcanoes with alkaline differentiated magma belong to the more explosive and destructive types, but knowledge about these systems is often limited. Unravelling the position and conditions in the source magma chamber systems that feed volcanism at the surface is vital to understand these systems better. READ MORE

  5. 14. Tool wear in turning titanium alloys

    University essay from Uppsala universitet/Institutionen för kemi - Ångström

    Author : Magnus Johansson; [2015]
    Keywords : Titanium machining; Tool wear; Crater wear; Turning; WC Co cutting tool;

    Abstract : In this master thesis, performed at AB Sandvik Coromant, wear and tool life of uncoated WC/Co grades have been investigated during longitudinal turning of the titanium alloy Ti-6Al-4V. Due to titanium’s poor thermal conductivity and high chemical reactivity towards most metals, high temperature is achieved between the tool and workpiece material, resulting in high tool wear rates. READ MORE

  6. 15. The Roots of a Magma Chamber, the Central Intrusion, Rum, NW-Scotland

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Tobias Mattsson; [2014]
    Keywords : Rum; Layered Ultrabasic Intrusion; Long Loch Fault; 3D modelling; Rum; Minerallagrad magmakammare; Long Loch Förskastningen; 3D modellering;

    Abstract : The island of Rum in the Inner Hebrides, NW-Scotland, hosts a central volcanic complex that is part of the British-Irish Palaeogene Igneous Province situated in NE- Ireland and NW- Scotland. On Rum, rocks from several stages of Palaeogene magmatic activity have been exposed by millions of years of erosion. READ MORE