IGGCAS OpenIR  > 矿产资源研究院重点实验室
Zircon at the Nanoscale Records Metasomatic Processes Leading to Large Magmatic-Hydrothermal Ore Systems
Courtney-Davies, Liam1; Ciobanu, Cristiana L.1; Verdugo-Ihl, Max R.1; Slattery, Ashley2; Cook, Nigel J.1; Dmitrijeva, Marija1; Keyser, William1; Wade, Benjamin P.2; Domnick, Urs I.1; Ehrig, Kathy3; Xu, Jing1,4; Kontonikas-Charos, Alkiviadis1
2019-06-01
Source PublicationMINERALS
ISSN2075-163X
Volume9Issue:6Pages:34
AbstractThe petrography and geochemistry of zircon offers an exciting opportunity to better understand the genesis of, as well as identify pathfinders for, large magmatic-hydrothermal ore systems. Electron probe microanalysis, laser ablation inductively coupled plasma mass spectrometry, high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM) imaging, and energy-dispersive X-ray spectrometry STEM mapping/spot analysis were combined to characterize Proterozoic granitic zircon in the eastern Gawler Craton, South Australia. Granites from the similar to 1.85 Ga Donington Suite and similar to 1.6 Ga Hiltaba Suite were selected from locations that are either mineralized or not, with the same style of iron-oxide copper gold (IOCG) mineralization. Although Donington Suite granites are host to mineralization in several prospects, only Hiltaba Suite granites are considered fertile in that their emplacement at similar to 1.6 Ga is associated with generation of one of the best metal-endowed IOCG provinces on Earth. Crystal oscillatory zoning with respect to non-formula elements, notably Fe and Cl, are textural and chemical features preserved in zircon, with no evidence for U or Pb accumulation relating to amorphization effects. Bands with Fe and Ca show mottling with respect to chloro-hydroxy-zircon nanoprecipitates. Lattice defects occur along fractures crosscutting such nanoprecipitates indicating fluid infiltration post-mottling. Lattice stretching and screw dislocations leading to expansion of the zircon structure are the only nanoscale structures attributable to self-induced irradiation damage. These features increase in abundance in zircons from granites hosting IOCG mineralization, including from the world-class Olympic Dam Cu-U-Au-Ag deposit. The nano- to micron-scale features documented reflect interaction between magmatic zircon and corrosive Fe-Cl-bearing fluids in an initial metasomatic event that follows magmatic crystallization and immediately precedes deposition of IOCG mineralization. Quantification of alpha-decay damage that could relate zircon alteration to the first percolation point in zircon gives similar to 100 Ma, a time interval that cannot be reconciled with the 2-4 Ma period between magmatic crystallization and onset of hydrothermal fluid flow. Crystal oscillatory zoning and nanoprecipitate mottling in zircon intensify with proximity to mineralization and represent a potential pathfinder to locate fertile granites associated with Cu-Au mineralization.
Keywordzircon IOCG deposits Olympic Cu-Au Province HAADF STEM Fe-Cl-metasomatism chloro-hydroxy-zircon nanoprecipitates granite fertility
DOI10.3390/min9060364
Funding Organizationproject "Trace elements in iron-oxides: deportment, distribution and application in ore genesis, geochronology, exploration and mineral processing" - BHP Olympic Dam ; project "Trace elements in iron-oxides: deportment, distribution and application in ore genesis, geochronology, exploration and mineral processing" - BHP Olympic Dam ; South Australian Government Mining and Petroleum Services Centre of Excellence ; South Australian Government Mining and Petroleum Services Centre of Excellence ; ARC Research Hub for Australian Copper-Uranium ; ARC Research Hub for Australian Copper-Uranium ; project "Trace elements in iron-oxides: deportment, distribution and application in ore genesis, geochronology, exploration and mineral processing" - BHP Olympic Dam ; project "Trace elements in iron-oxides: deportment, distribution and application in ore genesis, geochronology, exploration and mineral processing" - BHP Olympic Dam ; South Australian Government Mining and Petroleum Services Centre of Excellence ; South Australian Government Mining and Petroleum Services Centre of Excellence ; ARC Research Hub for Australian Copper-Uranium ; ARC Research Hub for Australian Copper-Uranium ; project "Trace elements in iron-oxides: deportment, distribution and application in ore genesis, geochronology, exploration and mineral processing" - BHP Olympic Dam ; project "Trace elements in iron-oxides: deportment, distribution and application in ore genesis, geochronology, exploration and mineral processing" - BHP Olympic Dam ; South Australian Government Mining and Petroleum Services Centre of Excellence ; South Australian Government Mining and Petroleum Services Centre of Excellence ; ARC Research Hub for Australian Copper-Uranium ; ARC Research Hub for Australian Copper-Uranium ; project "Trace elements in iron-oxides: deportment, distribution and application in ore genesis, geochronology, exploration and mineral processing" - BHP Olympic Dam ; project "Trace elements in iron-oxides: deportment, distribution and application in ore genesis, geochronology, exploration and mineral processing" - BHP Olympic Dam ; South Australian Government Mining and Petroleum Services Centre of Excellence ; South Australian Government Mining and Petroleum Services Centre of Excellence ; ARC Research Hub for Australian Copper-Uranium ; ARC Research Hub for Australian Copper-Uranium
WOS KeywordTRACE-ELEMENT SIGNATURES ; BANDED IRON-FORMATION ; SOUTH-AUSTRALIA ; OLYMPIC DAM ; MIDDLEBACK RANGES ; GAWLER CRATON ; GEOCHRONOLOGICAL CONSTRAINTS ; RADIATION-DAMAGE ; PB ; EVOLUTION
Language英语
Funding Projectproject "Trace elements in iron-oxides: deportment, distribution and application in ore genesis, geochronology, exploration and mineral processing" - BHP Olympic Dam ; South Australian Government Mining and Petroleum Services Centre of Excellence ; ARC Research Hub for Australian Copper-Uranium[IH130200033]
Funding Organizationproject "Trace elements in iron-oxides: deportment, distribution and application in ore genesis, geochronology, exploration and mineral processing" - BHP Olympic Dam ; project "Trace elements in iron-oxides: deportment, distribution and application in ore genesis, geochronology, exploration and mineral processing" - BHP Olympic Dam ; South Australian Government Mining and Petroleum Services Centre of Excellence ; South Australian Government Mining and Petroleum Services Centre of Excellence ; ARC Research Hub for Australian Copper-Uranium ; ARC Research Hub for Australian Copper-Uranium ; project "Trace elements in iron-oxides: deportment, distribution and application in ore genesis, geochronology, exploration and mineral processing" - BHP Olympic Dam ; project "Trace elements in iron-oxides: deportment, distribution and application in ore genesis, geochronology, exploration and mineral processing" - BHP Olympic Dam ; South Australian Government Mining and Petroleum Services Centre of Excellence ; South Australian Government Mining and Petroleum Services Centre of Excellence ; ARC Research Hub for Australian Copper-Uranium ; ARC Research Hub for Australian Copper-Uranium ; project "Trace elements in iron-oxides: deportment, distribution and application in ore genesis, geochronology, exploration and mineral processing" - BHP Olympic Dam ; project "Trace elements in iron-oxides: deportment, distribution and application in ore genesis, geochronology, exploration and mineral processing" - BHP Olympic Dam ; South Australian Government Mining and Petroleum Services Centre of Excellence ; South Australian Government Mining and Petroleum Services Centre of Excellence ; ARC Research Hub for Australian Copper-Uranium ; ARC Research Hub for Australian Copper-Uranium ; project "Trace elements in iron-oxides: deportment, distribution and application in ore genesis, geochronology, exploration and mineral processing" - BHP Olympic Dam ; project "Trace elements in iron-oxides: deportment, distribution and application in ore genesis, geochronology, exploration and mineral processing" - BHP Olympic Dam ; South Australian Government Mining and Petroleum Services Centre of Excellence ; South Australian Government Mining and Petroleum Services Centre of Excellence ; ARC Research Hub for Australian Copper-Uranium ; ARC Research Hub for Australian Copper-Uranium
WOS Research AreaMineralogy ; Mining & Mineral Processing
WOS SubjectMineralogy ; Mining & Mineral Processing
WOS IDWOS:000473809300037
PublisherMDPI
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/92673
Collection矿产资源研究院重点实验室
Corresponding AuthorCourtney-Davies, Liam
Affiliation1.Univ Adelaide, Sch Chem Engn & Adv Mat, Adelaide, SA 5005, Australia
2.Univ Adelaide, Adelaide Microscopy, Adelaide, SA 5005, Australia
3.BHP Olymp Dam, Adelaide, SA 5000, Australia
4.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
Recommended Citation
GB/T 7714
Courtney-Davies, Liam,Ciobanu, Cristiana L.,Verdugo-Ihl, Max R.,et al. Zircon at the Nanoscale Records Metasomatic Processes Leading to Large Magmatic-Hydrothermal Ore Systems[J]. MINERALS,2019,9(6):34.
APA Courtney-Davies, Liam.,Ciobanu, Cristiana L..,Verdugo-Ihl, Max R..,Slattery, Ashley.,Cook, Nigel J..,...&Kontonikas-Charos, Alkiviadis.(2019).Zircon at the Nanoscale Records Metasomatic Processes Leading to Large Magmatic-Hydrothermal Ore Systems.MINERALS,9(6),34.
MLA Courtney-Davies, Liam,et al."Zircon at the Nanoscale Records Metasomatic Processes Leading to Large Magmatic-Hydrothermal Ore Systems".MINERALS 9.6(2019):34.
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