Sökning: "dunite"

Hittade 3 uppsatser innehållade ordet dunite.

1. 1. PGE Geochemistry and Mineralogy of Dunite, Chromitite, and Laterite Samples from the Acoje Ophiolite Block, Philippines

   Master-uppsats, Luleå tekniska universitet/Geovetenskap och miljöteknik

   Författare :Michelle Dossey; [2023]
   Nyckelord :PGM; PGE; laterite; limonite; chromitite; dunite; platinum group minerals; platinum group elements; Acoje; Philippines;

   Sammanfattning : Ni-laterites have the potential to become unconventional ore deposits for platinum group elements (PGE). This study was conducted to determine enrichment trends of PGE as a result of the Ni-laterization process. LÄS MER

3. 2. Bio-enhanced silicate weathering : Coupled to sequestration of CO2

   Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Limnologi

   Författare :Marcus Westholm; [2022]
   Nyckelord :NETs; Bio-enhanced weathering; Carbon capture;

   Sammanfattning : Weathering of silicate minerals has long been a known source of natural CO2 sequestration, that could be increased in the presence of microorganisms. Bio-enhanced weathering of silicate minerals could increase the sequestration of CO2 from the atmosphere. LÄS MER

4. 3. Lejarfjället Garnet(?) Peridotite – Origin and Petrological Characterization of Symplectitic Aggregates in Ultramafic Rocks

   Kandidat-uppsats, Uppsala universitet/Mineralogi, petrologi och tektonik

   Författare :Felicia Eriksson; [2022]
   Nyckelord :ultramafic; high-pressure metamorphism; peridotite; garnet breakdown; Scandinavian Caledonides; ultramafisk; högtrycks metamorfos; peridotit; granat; skandinaviska kaledoniderna;

   Sammanfattning : Ultramafic rocks are abundant in the Earth’s mantle but rare on the surface. Since no in-situ samples from the mantle can be collected, mantle rocks provide knowledge of mechanisms operating in the mantle and large-scale processes that brought them up to the surface. LÄS MER