Essays about: "apatit"

Showing result 11 - 15 of 18 essays containing the word apatit.

  1. 11. Alnö Carbonatite: A Future Moneymaker?

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Aklaqur Rahman; [2017]
    Keywords : The Alnö Complex; carbonates; rare earth elements; polarising microscope; Alnökomplexet; karbonatiter; sällsynta jordartsmetaller; mikroprob;

    Abstract : Carbonatites are rare igneous rocks, which contain at least 50 %, carbonate minerals. They are often found along with alkaline silicate rocks, meaning that they contain relatively large amounts of Na2O and K2O, and important tools to understand mantle processes. READ MORE

  3. 12. Crystallization and Emplacement of the Monte Amarelo Dikes: Magma Storage Assessment on Fogo, Cape Verde Islands

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Olle Risby; [2017]
    Keywords : Fogo; magma storage model; thermobarometry; clinopyroxene; intrusion landslide.; Fogo; magmalagringsdjup; termobarometri; klinopyroxen; intrusion; skred;

    Abstract : The volcanic island of Fogo belongs to the Cape Verde archipelago, a two-tiered chain of islands situated 500 km west of the African coast. Fogo is regarded as one of the most active volcanoes in the world with 10 eruptions during the last 250 years. The former shield volcano Monte Amarelo reached 3500 m.a. READ MORE

  4. 13. Oxygen and iron isotope systematics of the Grängesberg Mining District (GMD), Central Sweden

    University essay from Berggrundsgeologi

    Author : Franz Weis; [2013]
    Keywords : Grängesberg; Apatite-iron oxide ore; oxygen isotopes; iron isotopes; Kiruna-type; Eisenisotope; Sauerstoffisotope; Eisenerz; Grängesberg; Kiruna-Typ; Apatit-järnmalm; syreisotoper; järnisotoper; Grängesberg; Kiruna-typ;

    Abstract : Iron is the most important metal for modern industry and Sweden is the number one iron producer in Europe. The main sources for iron ore in Sweden are the apatite-iron oxide deposits of the "Kiruna-type", named after the iconic Kiruna ore deposit in Northern Sweden. READ MORE

  5. 14. Cosmic ray tracks in chondritic material with focus on silicate mineral inclusions in chromite

    University essay from Lunds universitet/Geologiska institutionen

    Author : My Riebe; [2012]
    Keywords : extraterrestrial chromite; cosmic rays; cosmic ray tracks; ordinary chondrites; Ordovician; kosmisk strålning; spår efter kosmisk strålning; extraterrestrisk kromit; ordinära kondriter; ordovicium; Earth and Environmental Sciences;

    Abstract : It has been suggested that the cosmic ray flux varies as Earth moves relative to the spiral arms in the galaxy. However, no satisfying record over the cosmic ray flux over long time scales has been presented. READ MORE

  6. 15. Microspherules from the lowermost Ordovician in Scania, Sweden : affinity and taphonomy

    University essay from Lunds universitet/Geologiska institutionen

    Author : Jan Ulmius; [2010]
    Keywords : Ordovician; microfossil; embryo; pyrite; apatite; pyritisation; phosphatisation; carbonisation; Alum Shale Formation; Sweden; Ordovicium; mikrofossil; pyrit; apatit; pyritisering; fosfatbildning; kolbildning; alunskiffer; Sverige; Earth and Environmental Sciences;

    Abstract : Microscopic spherules, 0.1-0.5 mm in diameter, from the lowermost Ordovician Rhabdinopora flabelliforme parabola graptolite Zone of the Alum Shale Formation in Södra Sandby, Scania, southern Sweden, have been investigated. READ MORE