Laser-ablation ICP-MS analyses of rutile from the Bamble region, S. Norway
The Bamble Sector (Arendal-Bamble region) of the Fennoscandian Shield in S. Norway is affected by metasomatic processes related to large-scale fluid migration during Sveconorwegian (Grenvillian) tectonothermal events. In some areas such as at Ødegårdens verk, pervasive fluid infiltration has transfo...
Main Authors: | , |
---|---|
Format: | Report |
Language: | English |
Published: |
2002
|
Subjects: | |
Online Access: | https://hdl.handle.net/11250/2665233 |
id |
ftnorgesgu:oai:openarchive.ngu.no:11250/2665233 |
---|---|
record_format |
openpolar |
spelling |
ftnorgesgu:oai:openarchive.ngu.no:11250/2665233 2023-05-15T16:13:06+02:00 Laser-ablation ICP-MS analyses of rutile from the Bamble region, S. Norway Korneliussen, Are Ihle, Peter 17121 Langesund 16124 Vegår 16123 Nelaug 16122 Tvedestrand AGDER TELEMARK 17134 Nordagutu 2002 application/pdf https://hdl.handle.net/11250/2665233 eng eng NGU-Rapport (2002.112) urn:issn:0800-3416 https://hdl.handle.net/11250/2665233 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no CC-BY 16+101 TITAN MINERAL RUTIL Report 2002 ftnorgesgu 2022-07-03T15:26:56Z The Bamble Sector (Arendal-Bamble region) of the Fennoscandian Shield in S. Norway is affected by metasomatic processes related to large-scale fluid migration during Sveconorwegian (Grenvillian) tectonothermal events. In some areas such as at Ødegårdens verk, pervasive fluid infiltration has transformed gabbroic amphibolites into a characteristic scapolite-hornblende rock (ødegårdite). Ilmenite in the gabbroic protolith breaks down to rutile during the metasomatic processes while iron is removed from the system by the fluids. Thus, the metasomatism creates rutile ores.\rThe region has been regarded to have a potential for economic rutile deposits. However, a disadvantage is a relatively high content of uranium in the rutile. In order to obtain additional information on the character of rutile in various parts of the region and the U contents, rutile from stream sediment heavy fractions have been studied by SEM and analysed for U by laser-ablation ICP-MS.\rMixed mineral grains with ilmenite, rutile and titanite are common in the stream sediments indicating that rutile-forming geological processes in the respective areas have been incomplete; some stream sediment samples have \"good rutile\" without ilmenite or titanite intergrowths.\rBased on the laser-ablation ICP-MS, analysed rutile from the Arendal-Bamble region contains 30-80 ppm U in general, although values up to 180 ppm U have been identified. Values below 10 ppm U are common in ilmenite-rutile-titanite intergrowths representing incomplete rutile transformation.\rThe potential for economically attractive rutile deposits in the Arendal-Bamble region is probably small due to the overall high uranium content in rutile. 50243 Report Fennoscandian NGU Open Archive (Geological Survey of Norway) Norway Titan ENVELOPE(33.629,33.629,67.560,67.560) |
institution |
Open Polar |
collection |
NGU Open Archive (Geological Survey of Norway) |
op_collection_id |
ftnorgesgu |
language |
English |
topic |
TITAN MINERAL RUTIL |
spellingShingle |
TITAN MINERAL RUTIL Korneliussen, Are Ihle, Peter Laser-ablation ICP-MS analyses of rutile from the Bamble region, S. Norway |
topic_facet |
TITAN MINERAL RUTIL |
description |
The Bamble Sector (Arendal-Bamble region) of the Fennoscandian Shield in S. Norway is affected by metasomatic processes related to large-scale fluid migration during Sveconorwegian (Grenvillian) tectonothermal events. In some areas such as at Ødegårdens verk, pervasive fluid infiltration has transformed gabbroic amphibolites into a characteristic scapolite-hornblende rock (ødegårdite). Ilmenite in the gabbroic protolith breaks down to rutile during the metasomatic processes while iron is removed from the system by the fluids. Thus, the metasomatism creates rutile ores.\rThe region has been regarded to have a potential for economic rutile deposits. However, a disadvantage is a relatively high content of uranium in the rutile. In order to obtain additional information on the character of rutile in various parts of the region and the U contents, rutile from stream sediment heavy fractions have been studied by SEM and analysed for U by laser-ablation ICP-MS.\rMixed mineral grains with ilmenite, rutile and titanite are common in the stream sediments indicating that rutile-forming geological processes in the respective areas have been incomplete; some stream sediment samples have \"good rutile\" without ilmenite or titanite intergrowths.\rBased on the laser-ablation ICP-MS, analysed rutile from the Arendal-Bamble region contains 30-80 ppm U in general, although values up to 180 ppm U have been identified. Values below 10 ppm U are common in ilmenite-rutile-titanite intergrowths representing incomplete rutile transformation.\rThe potential for economically attractive rutile deposits in the Arendal-Bamble region is probably small due to the overall high uranium content in rutile. 50243 |
format |
Report |
author |
Korneliussen, Are Ihle, Peter |
author_facet |
Korneliussen, Are Ihle, Peter |
author_sort |
Korneliussen, Are |
title |
Laser-ablation ICP-MS analyses of rutile from the Bamble region, S. Norway |
title_short |
Laser-ablation ICP-MS analyses of rutile from the Bamble region, S. Norway |
title_full |
Laser-ablation ICP-MS analyses of rutile from the Bamble region, S. Norway |
title_fullStr |
Laser-ablation ICP-MS analyses of rutile from the Bamble region, S. Norway |
title_full_unstemmed |
Laser-ablation ICP-MS analyses of rutile from the Bamble region, S. Norway |
title_sort |
laser-ablation icp-ms analyses of rutile from the bamble region, s. norway |
publishDate |
2002 |
url |
https://hdl.handle.net/11250/2665233 |
op_coverage |
17121 Langesund 16124 Vegår 16123 Nelaug 16122 Tvedestrand AGDER TELEMARK 17134 Nordagutu |
long_lat |
ENVELOPE(33.629,33.629,67.560,67.560) |
geographic |
Norway Titan |
geographic_facet |
Norway Titan |
genre |
Fennoscandian |
genre_facet |
Fennoscandian |
op_source |
16+101 |
op_relation |
NGU-Rapport (2002.112) urn:issn:0800-3416 https://hdl.handle.net/11250/2665233 |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no |
op_rightsnorm |
CC-BY |
_version_ |
1765998707185025024 |