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Genesis of the Per Geijer Apatite Iron Ores, Kiruna Area, Northern Sweden
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Geosciences and Environmental Engineering.ORCID iD: 0000-0002-0935-3430
2015 (English)In: Mineral Resources in a Sustainable World / [ed] A.S. Andre-Mayer; M. Cathelineau; P. Muchez; E. Pirard; S. Sindern, 2015, p. 1107-1110Conference paper, Published paper (Refereed)
Abstract [en]

Apatite iron ores are rather uncommon and the genesis of these deposits has been debated for more than a century. In the Kiruna area in northern Sweden the Per Geijer deposits shows a large variation in mineral composition, structures and textures. Apatite, carbonate and quartz are gangue minerals occurring disseminated in varying amounts in the ore as well as segregations in the form of blebs. Larger accumulations of apatite carbonate-quartz exhibit cutting contacts or mingling structures to the ore. The Per Geijer deposits are interpreted as having formed from iron oxide melts with high content of volatiles. During cooling these iron oxide melts underwent unmixing of volatile rich and iron-poor magma that generated apatite-carbonate-quartz rocks. The volatile components expelled during formation of the apatite iron ores also generated extensive hydrothermal brecciation and alteration in the wall rocks. The alteration is mainly developed in the hanging wall and includes K-feldspar, quartz, sericite, chlorite and carbonates

Place, publisher, year, edition, pages
2015. p. 1107-1110
National Category
Geology
Research subject
Ore Geology
Identifiers
URN: urn:nbn:se:ltu:diva-31264Local ID: 56442ed0-4d7f-4410-b9ea-0961aedc2a9dISBN: 978-2-85555-066-4 (print)OAI: oai:DiVA.org:ltu-31264DiVA, id: diva2:1004497
Conference
SGA Biennial Meeting on Mineral Resources in a Sustainable World : 24/08/2015 - 27/08/2015
Note
Validerad; 2016; Nivå 1; 20160621 (andbra)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2018-03-26Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
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  • vancouver
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More styles
Language
  • de-DE
  • en-GB
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  • Other locale
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Output format
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  • asciidoc
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