Oxygen Isotope Signatures of the Apatite-Iron Oxide Ore at Grängesberg
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. formed directly from a magma as...
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Uppsala universitet, Institutionen för geovetenskaper
2011
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ftuppsalauniv:oai:DiVA.org:uu-173031 2023-05-15T17:04:10+02:00 Oxygen Isotope Signatures of the Apatite-Iron Oxide Ore at Grängesberg Weis, Franz 2011 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-173031 eng eng Uppsala universitet, Institutionen för geovetenskaper Självständigt arbete i geovetenskap 19 http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-173031 info:eu-repo/semantics/openAccess Grängesberg Oxygen Isotope Apatite-Iron Oxide Ore Solid earth geology and petrology Berggrundsgeologi och petrologi Student thesis info:eu-repo/semantics/bachelorThesis text 2011 ftuppsalauniv 2023-02-23T21:42:59Z 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. formed directly from a magma as suggested for the iron ore deposits of El Laco in Chile or the deposits in Kiruna, although also these two are still subjected to controversies. In 2009 sampling was done on drillcores through the Grängesberg ore. On these samples an oxygen isotope study on magnetite, quartz and whole rock samples from both the ore and its host rocks was conducted in order to obtain new knowledge about the ore forming processes. The data allowed modeling to simulate a possible origin by different magmas or hydrothermal fluids as well as a possible temperature of formation. In addition, the data set was compared to published oxygen isotope analyses of the possible magmatic iron ores of Kiruna and El Laco. The results of the Grängesberg analysis revealed that the ore in the area seems to have an origin from both magmatic and hydrothermal sources. Bachelor Thesis Kiruna Uppsala University: Publications (DiVA) Kiruna |
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Uppsala University: Publications (DiVA) |
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ftuppsalauniv |
language |
English |
topic |
Grängesberg Oxygen Isotope Apatite-Iron Oxide Ore Solid earth geology and petrology Berggrundsgeologi och petrologi |
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Grängesberg Oxygen Isotope Apatite-Iron Oxide Ore Solid earth geology and petrology Berggrundsgeologi och petrologi Weis, Franz Oxygen Isotope Signatures of the Apatite-Iron Oxide Ore at Grängesberg |
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Grängesberg Oxygen Isotope Apatite-Iron Oxide Ore Solid earth geology and petrology Berggrundsgeologi och petrologi |
description |
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. formed directly from a magma as suggested for the iron ore deposits of El Laco in Chile or the deposits in Kiruna, although also these two are still subjected to controversies. In 2009 sampling was done on drillcores through the Grängesberg ore. On these samples an oxygen isotope study on magnetite, quartz and whole rock samples from both the ore and its host rocks was conducted in order to obtain new knowledge about the ore forming processes. The data allowed modeling to simulate a possible origin by different magmas or hydrothermal fluids as well as a possible temperature of formation. In addition, the data set was compared to published oxygen isotope analyses of the possible magmatic iron ores of Kiruna and El Laco. The results of the Grängesberg analysis revealed that the ore in the area seems to have an origin from both magmatic and hydrothermal sources. |
format |
Bachelor Thesis |
author |
Weis, Franz |
author_facet |
Weis, Franz |
author_sort |
Weis, Franz |
title |
Oxygen Isotope Signatures of the Apatite-Iron Oxide Ore at Grängesberg |
title_short |
Oxygen Isotope Signatures of the Apatite-Iron Oxide Ore at Grängesberg |
title_full |
Oxygen Isotope Signatures of the Apatite-Iron Oxide Ore at Grängesberg |
title_fullStr |
Oxygen Isotope Signatures of the Apatite-Iron Oxide Ore at Grängesberg |
title_full_unstemmed |
Oxygen Isotope Signatures of the Apatite-Iron Oxide Ore at Grängesberg |
title_sort |
oxygen isotope signatures of the apatite-iron oxide ore at grängesberg |
publisher |
Uppsala universitet, Institutionen för geovetenskaper |
publishDate |
2011 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-173031 |
geographic |
Kiruna |
geographic_facet |
Kiruna |
genre |
Kiruna |
genre_facet |
Kiruna |
op_relation |
Självständigt arbete i geovetenskap 19 http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-173031 |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1766058212115611648 |