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Intrusion related gold deposits in the Tanami and Kurundi-Kurinelli goldfields, Northern Territory, Australia: Constraints from LA-ICPMS analysis of fluid inclusions

Zhou, Li; Mernagh, Terrence; Lan, TingGuang; Tang, Yanweng; Wygralak, A S

Description

Gold deposits in the Tanami and Kurundi-Kurinelli goldfields of the Northern Territory, Australia, have geological and geochemical characteristics that distinguish them from the typical vein-hosted, orogenic gold deposits that occur in other parts of Australia. This study used cathodoluminescence (CL) and laser ablation inductively coupled plasma mass spectrometry (LA-ICPMS) analyses of fluid inclusions to investigate the source of mineralising fluids from both the highly mineralised Tanami...[Show more]

dc.contributor.authorZhou, Li
dc.contributor.authorMernagh, Terrence
dc.contributor.authorLan, TingGuang
dc.contributor.authorTang, Yanweng
dc.contributor.authorWygralak, A S
dc.date.accessioned2020-09-21T23:53:03Z
dc.identifier.issn0169-1368
dc.identifier.urihttp://hdl.handle.net/1885/211312
dc.description.abstractGold deposits in the Tanami and Kurundi-Kurinelli goldfields of the Northern Territory, Australia, have geological and geochemical characteristics that distinguish them from the typical vein-hosted, orogenic gold deposits that occur in other parts of Australia. This study used cathodoluminescence (CL) and laser ablation inductively coupled plasma mass spectrometry (LA-ICPMS) analyses of fluid inclusions to investigate the source of mineralising fluids from both the highly mineralised Tanami goldfield and weakly mineralised Kurundi-Kurinelli goldfields in northern Australia. Cathodoluminescence showed three generations of quartz in fractured and mineralised veins from the Groundrush deposit in the Tanami goldfield but the remaining deposits had uniform dark CL images. The LA-ICPMS trace element data indicate an evolution from B-As–enriched, magmatic fluid to a highly Sr-Baenriched fluid which results from interaction with sedimentary rocks. The fluids from both regions have chlorinity normalised Zn and Pb concentrations at the magmatic end of the metamorphic – magmatic mixing trend for these elements. This is in agreement with previous studies showing that gold mineralisation is coeval with magmatism in the Tanami region. The relatively high salinity of the fluids in both the Tanami and Kurundi – Kurinelli goldfields, and their trace element contents indicates that the deposits in both regions are intrusionrelated gold deposits. The higher gold endowment of the Tanami region may result from the multiple goldmineralisation events in this region whereas fluid flow associated with mineralisation in the Kurundi – Kurinelli goldfields appears to be of limited extent.
dc.description.sponsorshipThis work was financially supported by Chinese Academy of Sciences President’s International Fellowship Initiative (Grant No. 2017VCB0018) to TPM, and by the National Natural Science Foundation of China (41773058), the Science and Technology Foundation of Guizhou Province ([2013]3083), the Opening Foundation of State Key Laboratory of Ore Deposit Geochemistry, and the Institute of Geochemistry, Chinese Academy of Sciences (201504).
dc.format.mimetypeapplication/pdf
dc.language.isoen_AU
dc.publisherElsevier
dc.rights© 2019 Elsevier B.V
dc.sourceOre Geology Reviews
dc.titleIntrusion related gold deposits in the Tanami and Kurundi-Kurinelli goldfields, Northern Territory, Australia: Constraints from LA-ICPMS analysis of fluid inclusions
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume115
dc.date.issued2019
local.identifier.absfor040299 - Geochemistry not elsewhere classified
local.identifier.ariespublicationu5786633xPUB1304
local.publisher.urlhttps://www.elsevier.com/en-au
local.type.statusPublished Version
local.contributor.affiliationZhou, Li , Institute of Geochemistry, Chinese Academy of Sciences,
local.contributor.affiliationMernagh, Terrence, College of Science, ANU
local.contributor.affiliationLan, TingGuang, Chinese Academy of Sciences
local.contributor.affiliationTang, Yanweng, Chinese Academy of Sciences
local.contributor.affiliationWygralak, A S, Northern Territory Geological Survey
local.description.embargo2037-12-31
local.bibliographicCitation.issue0
local.bibliographicCitation.startpage1
local.bibliographicCitation.lastpage14
local.identifier.doi10.1016/j.oregeorev.2019.103189
local.identifier.absseo970104 - Expanding Knowledge in the Earth Sciences
dc.date.updated2020-12-06T07:23:59Z
local.identifier.thomsonIDWOS:000501412500018
CollectionsANU Research Publications

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