Cobalt of the Tyrone Igneous Complex: geochemistry of mafic hosted sulphides and remobilisation
APPROVED Primary sulphide mineralisation in mafic rocks and secondary remobilised sulphides contain significant cobalt and relate to early Palaeozoic ocean closure and arc-continent collision in the Irish Caledonian terrane. This study presents new laser ablation data, portable Xray diffraction (pXR...
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Trinity College Dublin. School of Natural Sciences. Discipline of Geology
2023
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Online Access: | http://hdl.handle.net/2262/102550 https://tcdlocalportal.tcd.ie/pls/EnterApex/f?p=800:71:0::::P71_USERNAME:MAWSONM |
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fttrinitycoll:oai:www.tara.tcd.ie:2262/102550 |
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The University of Dublin, Trinity College: TARA (Trinity's Access to Research Archive) |
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topic |
Tyrone Igneous Complex pXRF LA ICP-MS Cobalt Sulphide mineralisation |
spellingShingle |
Tyrone Igneous Complex pXRF LA ICP-MS Cobalt Sulphide mineralisation Mawson, Matthew Cobalt of the Tyrone Igneous Complex: geochemistry of mafic hosted sulphides and remobilisation |
topic_facet |
Tyrone Igneous Complex pXRF LA ICP-MS Cobalt Sulphide mineralisation |
description |
APPROVED Primary sulphide mineralisation in mafic rocks and secondary remobilised sulphides contain significant cobalt and relate to early Palaeozoic ocean closure and arc-continent collision in the Irish Caledonian terrane. This study presents new laser ablation data, portable Xray diffraction (pXRF) geochemistry, and the recent mineral exploration of Shackleton Resources Ltd whole rock analyses, to study sulphide mineralisation within the Tyrone Igneous Complex (TIC); and the study investigates geochemical similarities and temporal association between sulphide showings. A sulphide mobility event of the TIC can be dated to 455.8 ? 3 (mega annum) Ma age (Rice 2016), or 325 Ma (Parnell 2000), while LA ICP-MS sulphide mapping (Stratford 2019) records element zonation, possibly uniting the origins of sulphides and cobalt. The TIC mineralisation history is complex, the tectonics of terrane accretion and metamorphism may have increased sulphide mobility into adjacent rocks via extensional structures. On the TIC, sulphide showings of different types may be related. Individual sampled cobalt values are locally high at 0.12% Co, indicating an undiscovered economic concentration of the metal, while sulfosalt elements show a close association of bismuth-silver, gold, and copper. Volcanogenic massive sulphide (VMS) type mineralisation is well understood in the adjacent terrane of Newfoundland and Nova Scotia. But no VMS economic metal deposits are found in the Laurentian half of Ireland and Britain. In addition, increasing awareness of resource responsibility, provenance, and critical elements, a domestic supply of cobalt is aligned to the WHO sustainable development goals (https://www.who.int/europe/about-us/our-work/sustainable-development-goals). Therefore, understanding sulphide mineralisation of the TIC may identify a source of metals, metal mobilisation, and metal traps in syn-mineralisation structures. Furthermore, it is hoped the structural concept of northwest striking, large basement fractures and the migration ... |
author2 |
McClenaghan, Sean Shackleton Resources Ltd |
format |
Thesis |
author |
Mawson, Matthew |
author_facet |
Mawson, Matthew |
author_sort |
Mawson, Matthew |
title |
Cobalt of the Tyrone Igneous Complex: geochemistry of mafic hosted sulphides and remobilisation |
title_short |
Cobalt of the Tyrone Igneous Complex: geochemistry of mafic hosted sulphides and remobilisation |
title_full |
Cobalt of the Tyrone Igneous Complex: geochemistry of mafic hosted sulphides and remobilisation |
title_fullStr |
Cobalt of the Tyrone Igneous Complex: geochemistry of mafic hosted sulphides and remobilisation |
title_full_unstemmed |
Cobalt of the Tyrone Igneous Complex: geochemistry of mafic hosted sulphides and remobilisation |
title_sort |
cobalt of the tyrone igneous complex: geochemistry of mafic hosted sulphides and remobilisation |
publisher |
Trinity College Dublin. School of Natural Sciences. Discipline of Geology |
publishDate |
2023 |
url |
http://hdl.handle.net/2262/102550 https://tcdlocalportal.tcd.ie/pls/EnterApex/f?p=800:71:0::::P71_USERNAME:MAWSONM |
genre |
Newfoundland |
genre_facet |
Newfoundland |
op_relation |
Adams C Brand C Dentith M Fiorentini M Caruso S and Mehta M 2020 The use of pXRF for light element geochemical analysis a review of hardware design limitations and an empirical investigation of air vacuum helium flush and detector window technologies. Geochemistry Exploration Environment Analysis pp.geochem2019-076. Alsop G and Hutton D 1993 Major southeast-directed Caledonian thrusting and folding in the Dalradian rocks of mid-Ulster implications for Caledonian tectonics and mid-crustal shear zones. Geological Magazine 130(2) pp.233-244. Alsop G and Hutton D 1993 Caledonian extension in the north Irish Dalradian implications for the timing and activation of gravity collapse. Journal of the Geological Society 150(1) pp.33-36. Arthurs J Knowles P Strachan S and Calvert-Harrison E 1975 The Geology And Metalliferous Mineral Potential Of The Sperrin Mountains Area. Armstrong H and Owen A 2001 Terrane Evolution of the Paratectonic Caledonides of Northern Britain. Journal of the Geological Society 158(3) pp.475-486. Cawood P McCausland P Dunning G Opening Iapetus Constraints from the Laurentian margin in Newfoundland. GSA Bulletin; v. 113; no. 4; p. 443?453 Barrow G 1893 On an Intrusion of Muscovite-biotite Gneiss in the South-eastern Highlands of Scotland and its accompanying Metamorphism. Quarterly Journal of the Geological Society 1893 v.49; p330-358 Bird A Thirlwall M Strachan R & Manning C 2013 Lu?Hf and Sm?Nd dating of metamorphic garnet evidence for multiple accretion events during the Caledonian orogeny in Scotland. Journal of the Geological Society London Vol. 170 pp. 301 ?317 Chew D |
op_rights |
Y openAccess |
_version_ |
1810458691746398208 |
spelling |
fttrinitycoll:oai:www.tara.tcd.ie:2262/102550 2024-09-15T18:20:19+00:00 Cobalt of the Tyrone Igneous Complex: geochemistry of mafic hosted sulphides and remobilisation Mawson, Matthew McClenaghan, Sean Shackleton Resources Ltd 2023 application/pdf http://hdl.handle.net/2262/102550 https://tcdlocalportal.tcd.ie/pls/EnterApex/f?p=800:71:0::::P71_USERNAME:MAWSONM unknown Trinity College Dublin. School of Natural Sciences. Discipline of Geology Adams C Brand C Dentith M Fiorentini M Caruso S and Mehta M 2020 The use of pXRF for light element geochemical analysis a review of hardware design limitations and an empirical investigation of air vacuum helium flush and detector window technologies. Geochemistry Exploration Environment Analysis pp.geochem2019-076. Alsop G and Hutton D 1993 Major southeast-directed Caledonian thrusting and folding in the Dalradian rocks of mid-Ulster implications for Caledonian tectonics and mid-crustal shear zones. Geological Magazine 130(2) pp.233-244. Alsop G and Hutton D 1993 Caledonian extension in the north Irish Dalradian implications for the timing and activation of gravity collapse. Journal of the Geological Society 150(1) pp.33-36. Arthurs J Knowles P Strachan S and Calvert-Harrison E 1975 The Geology And Metalliferous Mineral Potential Of The Sperrin Mountains Area. Armstrong H and Owen A 2001 Terrane Evolution of the Paratectonic Caledonides of Northern Britain. Journal of the Geological Society 158(3) pp.475-486. Cawood P McCausland P Dunning G Opening Iapetus Constraints from the Laurentian margin in Newfoundland. GSA Bulletin; v. 113; no. 4; p. 443?453 Barrow G 1893 On an Intrusion of Muscovite-biotite Gneiss in the South-eastern Highlands of Scotland and its accompanying Metamorphism. Quarterly Journal of the Geological Society 1893 v.49; p330-358 Bird A Thirlwall M Strachan R & Manning C 2013 Lu?Hf and Sm?Nd dating of metamorphic garnet evidence for multiple accretion events during the Caledonian orogeny in Scotland. Journal of the Geological Society London Vol. 170 pp. 301 ?317 Chew D Y openAccess Tyrone Igneous Complex pXRF LA ICP-MS Cobalt Sulphide mineralisation Thesis thesis_dissertations refereed_publications Masters (Research) 2023 fttrinitycoll 2024-08-15T04:52:30Z APPROVED Primary sulphide mineralisation in mafic rocks and secondary remobilised sulphides contain significant cobalt and relate to early Palaeozoic ocean closure and arc-continent collision in the Irish Caledonian terrane. This study presents new laser ablation data, portable Xray diffraction (pXRF) geochemistry, and the recent mineral exploration of Shackleton Resources Ltd whole rock analyses, to study sulphide mineralisation within the Tyrone Igneous Complex (TIC); and the study investigates geochemical similarities and temporal association between sulphide showings. A sulphide mobility event of the TIC can be dated to 455.8 ? 3 (mega annum) Ma age (Rice 2016), or 325 Ma (Parnell 2000), while LA ICP-MS sulphide mapping (Stratford 2019) records element zonation, possibly uniting the origins of sulphides and cobalt. The TIC mineralisation history is complex, the tectonics of terrane accretion and metamorphism may have increased sulphide mobility into adjacent rocks via extensional structures. On the TIC, sulphide showings of different types may be related. Individual sampled cobalt values are locally high at 0.12% Co, indicating an undiscovered economic concentration of the metal, while sulfosalt elements show a close association of bismuth-silver, gold, and copper. Volcanogenic massive sulphide (VMS) type mineralisation is well understood in the adjacent terrane of Newfoundland and Nova Scotia. But no VMS economic metal deposits are found in the Laurentian half of Ireland and Britain. In addition, increasing awareness of resource responsibility, provenance, and critical elements, a domestic supply of cobalt is aligned to the WHO sustainable development goals (https://www.who.int/europe/about-us/our-work/sustainable-development-goals). Therefore, understanding sulphide mineralisation of the TIC may identify a source of metals, metal mobilisation, and metal traps in syn-mineralisation structures. Furthermore, it is hoped the structural concept of northwest striking, large basement fractures and the migration ... Thesis Newfoundland The University of Dublin, Trinity College: TARA (Trinity's Access to Research Archive) |