Sökning: "orthomagmatic"
Hittade 3 uppsatser innehållade ordet orthomagmatic.
1. Laser Ablation in Magnetites; Unravelling the Signatures of Trace Element Patterns for Ore Petrogenesis : Trace element signatures of magnetite linked to metallogenesis of iron mineralizations of the Kiruna type
Master-uppsats, Uppsala universitet/Institutionen för geovetenskaperSammanfattning : Trace element analyses of magnetite samples from multiple ore deposits worldwide have recently been conducted, using both EPMA and LA-ICPMS, in order to try and understand the petrogenesis of Kiruna-type ore deposits. Here I employ literature data and new data from Kiruna and Grängesberg (Sweden) to help constrain and visualise evolutionary trends recorded by our samples and derive an overall model for the evolutionary processes that lead to Kiruna-type deposits. LÄS MER
2. Petrology of platinum-group element mineralization in the Koillismaa intrusion, Finland
Master-uppsats, Lunds universitet/Geologiska institutionenSammanfattning : The 2.44 Ga Koillismaa intrusion of the Koillismaa-Näränkävaara Layered Complex, in northeastern Finland, has been studied in order to assess the formation processes involved during platinum-group element (PGE) mineralization. LÄS MER
3. Oxygen Isotope Signatures of the Apatite-Iron Oxide Ore at Grängesberg
Kandidat-uppsats, Institutionen för geovetenskaperSammanfattning : The origin of apatite iron oxide ores, like the deposit at Grängesberg in the Bergslagen mining district, has been a subject of much discussion through the years. Some support a formation by hydrothermal fluids while others suggest that the ore is orthomagmatic, i.e. LÄS MER
