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Mineraliseringar utmed REE-linjen i sydvästra Bergslagen
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Solid Earth Geology.
2014 (Swedish)Independent thesis Basic level (degree of Bachelor), 180 HE creditsStudent thesis
Abstract [en]

This paper briefly summarizes Bergslagen as a bedrock province in order to give background to the genesis and presence of REE-bearing minerals (short for Rare Earth Elements) in the region. These mineralizations mainly occur along the REE-line, a line aproximately a hundred kilometers in length between Norberg in the north and Nora in the south with a width of a few kilometers. Situated in the southwest of Bergslagen it is currently one of only a few places in Sweden where REE-bearing iron oxide mineralizations are potentially economically viable for mining. Ore microscopy has been conducted in order to characterize an ore sample from Myrbacksfältet, one of few sulphide rich iron oxide mineralizations within the REE-line. Additionally, an electron microscope analysis of a sample from Stålklockan, a suspected REE-bearing mineralization also within the REE-line was confirmed by EDS (short for Energy Dispersive Spectrum) analysis. An interactive map has been made of the REE- line to aid with visualization in an attempt to collect all known geospatial-, mineral-  and bedrock information in one place. The map is available in PDF format in conjunction with this text. A static version of this map is presented under 4.1 (REE-linjen).

Abstract [sv]

Berggrundsprovinsen Bergslagens regionala geologi beskrivs inledningsvis för att ge bakgrund till de fyndigheter av REE-förande mineral (eng. Rare Earth Elements; Sällsynta jordartsmetaller) som förekommer utmed en ungefär hundra kilometer lång och ett par kilometer bred zon. Detta geografiskt och mineralogiskt avgränsade område kallas REE-linjen och ligger i sydvästra Bergslagen. I detta område mellan Norberg i norr och Nora i söder finns idag några av de få potentiellt ekonomiskt brytbara fyndigheterna av REE-förande mineral i Sverige vilket har gjort en kartkonstruktion vari spatiell-, mineralogisk-, och berggrundsdata över området finns sammanställd meningsfull. En sådan karta har gjorts i ArcGIS och presenteras i interaktivt PDF format i anslutning till texten. Malmmikroskopisk karaktärisering av en sulfidrik järnmalm från Myrbacksfältet i REE-linjen, såväl som en elektronmikroskopisk EDS (Energy Dispersive Spectrum) analys av ett prov från Stålklockan i Riddarhyttans malmfält har genomförts.

Place, publisher, year, edition, pages
2014. , 23 p.
Series
Examensarbete vid Institutionen för geovetenskaper, ISSN 1650-6553
Series
Självständigt arbete, 99
Keyword [sv]
REE-mineraliseringar, REE-linjen, Bergslagen, Sulfidmikroskopering, SEM-EDS, ArcGIS
National Category
Geology
Identifiers
URN: urn:nbn:se:uu:diva-227348OAI: oai:DiVA.org:uu-227348DiVA: diva2:729011
Educational program
Bachelor Programme in Earth Science
Presentation
2014-06-04, Hambergsalen, Geocentrum, Uppsala, 13:30 (Swedish)
Supervisors
Examiners
Available from: 2014-07-24 Created: 2014-06-25 Last updated: 2014-07-24Bibliographically approved

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