U-Pb, Ar-Ar, and Re-Os Geochronological Constraints on Multiple Magmatic–Hydrothermal Episodes at the Lake George Mine, Central New Brunswick

The Lake George antimony mine was at one time North America’s largest producer of antimony. Despite being widely known for the antimony mineralization, the deposit also hosts a range of styles of mineralization such as multiple generations of W-Mo bearing quartz veins as well as a system of As-Au be...
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Gespeichert in:

Autor*in:	Carlin Lentz [verfasserIn] Kathleen Thorne [verfasserIn] Christopher R. M. McFarlane [verfasserIn] Douglas A. Archibald [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2020

Schlagwörter:	U-Pb geochronology Ar-Ar geochronology Re-Os geochronology intrusion-related W-Mo gold

Übergeordnetes Werk:	In: Minerals - MDPI AG, 2012, 10(2020), 6, p 566
Übergeordnetes Werk:	volume:10 ; year:2020 ; number:6, p 566

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.3390/min10060566

Katalog-ID:	DOAJ037411608

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allfieldsSound	10.3390/min10060566 doi (DE-627)DOAJ037411608 (DE-599)DOAJ83aee55eaea2436a8d176c40c1a9aaa3 DE-627 ger DE-627 rakwb eng QE351-399.2 Carlin Lentz verfasserin aut U-Pb, Ar-Ar, and Re-Os Geochronological Constraints on Multiple Magmatic–Hydrothermal Episodes at the Lake George Mine, Central New Brunswick 2020 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The Lake George antimony mine was at one time North America’s largest producer of antimony. Despite being widely known for the antimony mineralization, the deposit also hosts a range of styles of mineralization such as multiple generations of W-Mo bearing quartz veins as well as a system of As-Au bearing quartz–carbonate veins. In situ U-Pb zircon geochronology, using LA ICP-MS, of the Lake George granodiorite yielded a weighted mean <sup<206</sup<Pb/<sup<238</sup<U age of 419.6 ± 3.0 Ma. Step heating of phlogopite separated from the lamprophyre dykes produced a <sup<40</sup<Ar/<sup<39</sup<Ar plateau segment date of 419.4 ± 1.4 Ma. Single molybdenite crystal analysis for Re-Os geochronology was conducted on two W-Mo-bearing quartz veins, which cross-cut altered granodiorite and altered metasedimentary rocks and yielded two dates of 415.7 ± 1.7 Ma and 416.1 ± 1.7 Ma respectively. <sup<40</sup<Ar/<sup<39</sup<Ar geochronology of muscovite from alteration associated with Au-bearing quartz–carbonate veins yielded one representative plateau segment date of 414.1 ± 1.3 Ma. The dates produced in this study revealed that the different magmatic–hydrothermal events at the Lake George mine occurred over approximately a 10-million-year period at the end of the Silurian and the start of the Devonian following the termination of the Acadian orogeny. U-Pb geochronology Ar-Ar geochronology Re-Os geochronology intrusion-related W-Mo gold Mineralogy Kathleen Thorne verfasserin aut Christopher R. M. McFarlane verfasserin aut Douglas A. Archibald verfasserin aut In Minerals MDPI AG, 2012 10(2020), 6, p 566 (DE-627)689132069 (DE-600)2655947-X 2075163X nnns volume:10 year:2020 number:6, p 566 https://doi.org/10.3390/min10060566 kostenfrei https://doaj.org/article/83aee55eaea2436a8d176c40c1a9aaa3 kostenfrei https://www.mdpi.com/2075-163X/10/6/566 kostenfrei https://doaj.org/toc/2075-163X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2111 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 10 2020 6, p 566
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callnumber-first	Q - Science
author	Carlin Lentz
spellingShingle	Carlin Lentz misc QE351-399.2 misc U-Pb geochronology misc Ar-Ar geochronology misc Re-Os geochronology misc intrusion-related misc W-Mo misc gold misc Mineralogy U-Pb, Ar-Ar, and Re-Os Geochronological Constraints on Multiple Magmatic–Hydrothermal Episodes at the Lake George Mine, Central New Brunswick
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topic_title	QE351-399.2 U-Pb, Ar-Ar, and Re-Os Geochronological Constraints on Multiple Magmatic–Hydrothermal Episodes at the Lake George Mine, Central New Brunswick U-Pb geochronology Ar-Ar geochronology Re-Os geochronology intrusion-related W-Mo gold
topic	misc QE351-399.2 misc U-Pb geochronology misc Ar-Ar geochronology misc Re-Os geochronology misc intrusion-related misc W-Mo misc gold misc Mineralogy
topic_unstemmed	misc QE351-399.2 misc U-Pb geochronology misc Ar-Ar geochronology misc Re-Os geochronology misc intrusion-related misc W-Mo misc gold misc Mineralogy
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title	U-Pb, Ar-Ar, and Re-Os Geochronological Constraints on Multiple Magmatic–Hydrothermal Episodes at the Lake George Mine, Central New Brunswick
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title_full	U-Pb, Ar-Ar, and Re-Os Geochronological Constraints on Multiple Magmatic–Hydrothermal Episodes at the Lake George Mine, Central New Brunswick
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title_sort	u-pb, ar-ar, and re-os geochronological constraints on multiple magmatic–hydrothermal episodes at the lake george mine, central new brunswick
callnumber	QE351-399.2
title_auth	U-Pb, Ar-Ar, and Re-Os Geochronological Constraints on Multiple Magmatic–Hydrothermal Episodes at the Lake George Mine, Central New Brunswick
abstract	The Lake George antimony mine was at one time North America’s largest producer of antimony. Despite being widely known for the antimony mineralization, the deposit also hosts a range of styles of mineralization such as multiple generations of W-Mo bearing quartz veins as well as a system of As-Au bearing quartz–carbonate veins. In situ U-Pb zircon geochronology, using LA ICP-MS, of the Lake George granodiorite yielded a weighted mean <sup<206</sup<Pb/<sup<238</sup<U age of 419.6 ± 3.0 Ma. Step heating of phlogopite separated from the lamprophyre dykes produced a <sup<40</sup<Ar/<sup<39</sup<Ar plateau segment date of 419.4 ± 1.4 Ma. Single molybdenite crystal analysis for Re-Os geochronology was conducted on two W-Mo-bearing quartz veins, which cross-cut altered granodiorite and altered metasedimentary rocks and yielded two dates of 415.7 ± 1.7 Ma and 416.1 ± 1.7 Ma respectively. <sup<40</sup<Ar/<sup<39</sup<Ar geochronology of muscovite from alteration associated with Au-bearing quartz–carbonate veins yielded one representative plateau segment date of 414.1 ± 1.3 Ma. The dates produced in this study revealed that the different magmatic–hydrothermal events at the Lake George mine occurred over approximately a 10-million-year period at the end of the Silurian and the start of the Devonian following the termination of the Acadian orogeny.
abstractGer	The Lake George antimony mine was at one time North America’s largest producer of antimony. Despite being widely known for the antimony mineralization, the deposit also hosts a range of styles of mineralization such as multiple generations of W-Mo bearing quartz veins as well as a system of As-Au bearing quartz–carbonate veins. In situ U-Pb zircon geochronology, using LA ICP-MS, of the Lake George granodiorite yielded a weighted mean <sup<206</sup<Pb/<sup<238</sup<U age of 419.6 ± 3.0 Ma. Step heating of phlogopite separated from the lamprophyre dykes produced a <sup<40</sup<Ar/<sup<39</sup<Ar plateau segment date of 419.4 ± 1.4 Ma. Single molybdenite crystal analysis for Re-Os geochronology was conducted on two W-Mo-bearing quartz veins, which cross-cut altered granodiorite and altered metasedimentary rocks and yielded two dates of 415.7 ± 1.7 Ma and 416.1 ± 1.7 Ma respectively. <sup<40</sup<Ar/<sup<39</sup<Ar geochronology of muscovite from alteration associated with Au-bearing quartz–carbonate veins yielded one representative plateau segment date of 414.1 ± 1.3 Ma. The dates produced in this study revealed that the different magmatic–hydrothermal events at the Lake George mine occurred over approximately a 10-million-year period at the end of the Silurian and the start of the Devonian following the termination of the Acadian orogeny.
abstract_unstemmed	The Lake George antimony mine was at one time North America’s largest producer of antimony. Despite being widely known for the antimony mineralization, the deposit also hosts a range of styles of mineralization such as multiple generations of W-Mo bearing quartz veins as well as a system of As-Au bearing quartz–carbonate veins. In situ U-Pb zircon geochronology, using LA ICP-MS, of the Lake George granodiorite yielded a weighted mean <sup<206</sup<Pb/<sup<238</sup<U age of 419.6 ± 3.0 Ma. Step heating of phlogopite separated from the lamprophyre dykes produced a <sup<40</sup<Ar/<sup<39</sup<Ar plateau segment date of 419.4 ± 1.4 Ma. Single molybdenite crystal analysis for Re-Os geochronology was conducted on two W-Mo-bearing quartz veins, which cross-cut altered granodiorite and altered metasedimentary rocks and yielded two dates of 415.7 ± 1.7 Ma and 416.1 ± 1.7 Ma respectively. <sup<40</sup<Ar/<sup<39</sup<Ar geochronology of muscovite from alteration associated with Au-bearing quartz–carbonate veins yielded one representative plateau segment date of 414.1 ± 1.3 Ma. The dates produced in this study revealed that the different magmatic–hydrothermal events at the Lake George mine occurred over approximately a 10-million-year period at the end of the Silurian and the start of the Devonian following the termination of the Acadian orogeny.
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container_issue	6, p 566
title_short	U-Pb, Ar-Ar, and Re-Os Geochronological Constraints on Multiple Magmatic–Hydrothermal Episodes at the Lake George Mine, Central New Brunswick
url	https://doi.org/10.3390/min10060566 https://doaj.org/article/83aee55eaea2436a8d176c40c1a9aaa3 https://www.mdpi.com/2075-163X/10/6/566 https://doaj.org/toc/2075-163X
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up_date	2024-07-04T01:07:15.686Z
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U-Pb, Ar-Ar, and Re-Os Geochronological Constraints on Multiple Magmatic–Hydrothermal Episodes at the Lake George Mine, Central New Brunswick

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