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REE-förande fosfater i Blötbergets apatitjärnmalm
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences.
2013 (Swedish)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

The Blötberget deposit is situated in the north-western part of Bergslagen. The mineralization is an apatite-iron oxide ore of Kiruna type. In Bergslagen the apatite-iron oxide ores occur along a zone from Grängesberg through Blötberget to Idkerberget in the northeast and they represent the largest and the most important iron oxide deposit in Sweden, south of Norrbotten.

Different REE hosting phosphate phases has been studied by optical microscopy and analyzed by EDS attached to an electron microscope.

The key minerals other than iron oxides are apatite, monazite and xenotime. The relative concentration of the REE-bearing phases differs from the other apatite-iron oxide mineralizations in the area, for example Grängesberg, by a higher concentration of xenotime and lower contents of allanite.

Abstract [sv]

Blötbergets gruvor ligger i den nordvästra delen av Bergslagen, och utgörs av en apatitjärnmalm av Kirunatyp. Malmsstråket Grängesberg-Blötberget-Idkerberget är den största och viktigaste järnmineraliseringen i mellersta och södra Sverige.

Detta arbete har fokuserat på olika REE-förande faser, framför allt fosfater. Undersökningen har utförts genom optisk mikroskopering och SEM-EDS analyser.

Nyckelmineralen i denna undersökning är förutom järnoxider, apatit, monazit och xenotim. Fördelningen av REE-rika faser i apatitjärnmalmen i Blötberget skiljer sig en aning mot angränsande mineraliseringar som exempelvis Grängesberg. Blötberget har troligtvis en högre halt av xenotim och en lägre halt av allanit än Grängesberg.

Place, publisher, year, edition, pages
2013. , 24 p.
Series
Självständigt arbete, 80
National Category
Geology
Identifiers
URN: urn:nbn:se:uu:diva-209556OAI: oai:DiVA.org:uu-209556DiVA: diva2:658414
Subject / course
Geophysical Science (HGO)
Presentation
2012-05-29, Hambergssalen, Institutionen för geovetenskaper, Uppsala universitet, Villavägen 16, Uppsala, 13:20 (Swedish)
Supervisors
Examiners
Available from: 2013-10-29 Created: 2013-10-21 Last updated: 2013-10-29Bibliographically approved

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