The Kulumadau epithermal breccia-hosted gold deposit, Woodlark Island, Papua New Guinea

Simple item page
dc.contributor.authorBurkett, Den_AU
dc.contributor.authorGraham, ITen_AU
dc.contributor.authorSpencer, Len_AU
dc.contributor.authorLennox, Pen_AU
dc.contributor.authorCohen, Den_AU
dc.contributor.authorZwingmann, Hen_AU
dc.contributor.authorLau, Fen_AU
dc.contributor.authorKelly, BFJen_AU
dc.contributor.authorCendón, DIen_AU
dc.date.accessioned2022-02-03T04:39:05Zen_AU
dc.date.available2022-02-03T04:39:05Zen_AU
dc.date.issued2015-03-18en_AU
dc.date.statistics2022-01-12en_AU
dc.description.abstractThe Kulumadau deposit represents an intermediate-sulfidation epithermal gold deposit (3.8 Mt at 2.3 g/t, Ag:Au = 1). Mineralisation is primarily confined to hydrothermal breccias within preexisting fault zones, where it is disseminated throughout a hydrothermal matrix comprising chlorite-quartz-adularia-illite-I/S clays-calcite-pyrite. The host sequence represents numerous mid-Miocene pyroclastic flow eruptions within a tectonically active emergent shallow marine to subaerial depositional setting. Subsequent growth faulting was responsible for debris avalanches, which were subsequently cut by reverse faults. Faults were exploited by hydrothermal fluids, with the heightened porosity at the juncture between faults and debris material facilitating boiling of the ore constituents. Fluid inclusion studies suggest that fluid mixing between meteoric fluids and magmatic fluids, accompanied by boiling, were the primary mechanisms for gold deposition. The occurrence of anhydrite/gypsum as late-stage veins and their sulfur and oxygen isotopic values indicate post-mineralisation mixing of sea water with hydrothermal fluids.en_AU
dc.identifier.citationBurkett, D., Graham, I., Spencer, L., Lennox, P., Cohen, D., Zwingmann, H., Lau, F., Kelly B., & Cendon D. I. (2015). The Kulumadau epithermal breccia-hosted gold deposit, Woodlark Island, Papua New Guinea. Paper presented to the PACRIM 2015, Hong Kong, China, 18-21 March 2015.en_AU
dc.identifier.conferenceenddate21 March 2015en_AU
dc.identifier.conferencenamePACRIM 2015en_AU
dc.identifier.conferenceplaceHong Kong, Chinaen_AU
dc.identifier.conferencestartdate18 March 2015en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/12776en_AU
dc.language.isoenen_AU
dc.publisherAusIMMen_AU
dc.subjectGolden_AU
dc.subjectGeologic depositsen_AU
dc.subjectPapua New Guineaen_AU
dc.subjectGeologic faultsen_AU
dc.subjectFluidsen_AU
dc.subjectMineralizationen_AU
dc.subjectClaysen_AU
dc.titleThe Kulumadau epithermal breccia-hosted gold deposit, Woodlark Island, Papua New Guineaen_AU
dc.typeConference Paperen_AU
Files
Original bundle
Now showing 1 - 2 of 2
Thumbnail Image
Name:
PACRIM_Congress_Program_06032015.pdf
Size:
258.57 KB
Format:
Adobe Portable Document Format
Description:
Download
Thumbnail Image
Name:
PACRIM 2015 cendon.pdf
Size:
4.66 MB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.63 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Conference Publications