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U-Pb GEOCHRONOLOGY AND MINERALOGY OF HEMATITE FROM MANTOVERDE AND CARMEN DE COBRE, NORTHERN CHILE: CONSTRAINTS ON ANDEAN IOCG MINERALIZATION
Geochemical Data Analysis of Iron Oxide Copper-Gold Mineralization, Wirrda Well Prospect, South Australia
Ferro-tschermakite with polysomatic chain-width disorder identified in silician magnetite from Wirrda Well, South Australia: A HAADF STEM study
Metallic-Pb nanospheres in zircon from the Challenger Au deposit, South Australia: probing metamorphic and ore formation histories
Nanomineralogy of hydrothermal magnetite from Acropolis, South Australia: Genetic implications for iron-oxide copper gold mineralization
Staged formation of the supergiant Olympic Dam uranium deposit, Australia
OPENING THE MAGMATIC-HYDROTHERMAL WINDOW: HIGH-PRECISION U-Pb GEOCHRONOLOGY OF THE MESOPROTEROZOIC OLYMPIC DAM Cu-U-Au-Ag DEPOSIT, SOUTH AUSTRALIA
Trace-element remobilisation from W–Sn–U–Pb zoned hematite: Nanoscale insights into a mineral geochronometer behaviour during interaction with fluids
Halogens in hydrothermal sphalerite record origin of ore-forming fluids
Rare Earth Element Phosphate Minerals from the Olympic Dam Cu-U-Au-Ag Deposit, South Australia: Recognizing Temporal-Spatial Controls On Ree Mineralogy in an Evolved IOCG System
In situ spatial distribution mapping of radionuclides in minerals by nanoSIMS
Feldspar mineralogy and rare-earth element (re)mobilization in iron-oxide copper gold systems from South Australia: a nanoscale study
Chemical and textural interpretation of late-stage coffinite and brannerite from the Olympic Dam IOCG-Ag-U deposit
EARLY, DEEP MAGNETITE-FLUORAPATITE MINERALIZATION AT THE OLYMPIC DAM Cu-U-Au-Ag DEPOSIT, SOUTH AUSTRALIA
Replacement of Uraninite By Bornite VIA Coupled Dissolution-reprecipitation: Evidence from Texture and Microstructure
Chemical zoning and lattice distortion in uraninite from Olympic Dam, South Australia
Uraninite from the Olympic Dam IOCG-U-Ag deposit: Linking textural and compositional variation to temporal evolution
The fluorine link between a supergiant ore deposit and a silicic large igneous province: REPLY
Geology and Mineralogical Zonation of the Olympic Dam Iron Oxide Cu-U-Au-Ag Deposit, South Australia
Abstract Olympic Dam is a supergiant Fe oxide Cu-U-Au-Ag deposit that is also strongly enriched in a wide range of elements, including F, S, C, As, Ba, Bi, Cd, Co, Cr, Fe, In, Mo, Nb, Ni, P, Pb, Sb, Se, Sn, Sr, Te, V, W, Y, Zn, and rare earth elements (REE). The deposit contains more than 90 minerals. Mineralization was associated with intense, texturally destructive hematite and sericite alteration and brecciation of the primary host rock units, including Roxby Downs Granite, bedded clastic facies rocks, and mafic-ultramafic dikes. Based on comprehensive geological, geochemical, and mineralogical data sets collected during a deposit-scale resource delineation and sterilization drilling program (2003–2008), compiled with historical geological data and interpretations, we quantify geochemical and mineralogical associations and distribution patterns. The granite-derived elements (Al, Be, Ca, Hf, K, Li, Mg, Mn, Na, Rb, Si, Th, Ti, and Zr) are negatively correlated with Fe, whereas the hydrothermal elements (Ag, As, Au, Ba, Bi, Cd, Co, CO 2 , Cr, Cu, F, Fe, In, Mo, Nb, Ni, P, Pb, S, Sb, Se, Sn, Sr, Te, U, V, W, Y, Zn, and REE) are positively correlated; the ore and gangue minerals are also correlated with Fe abundance. There is a strong spatial association of Cu, U 3 O 8 , Au, and Ag. From the periphery inward and upward from depth toward the deposit center, the most significant zones are as follows: (1) reduced Fe oxide alteration (magnetite-apatite-siderite-chlorite-quartz) → oxidized Fe oxide alteration (hematite-sericite-fluorite) → hematite-quartz-barite alteration, (2) siderite → fluorite → barite, (3) sphalerite → galena → pyrite → chalcopyrite → bornite → chalcocite → nonsulfide, and (4) distal or paragenetically early (?) base metal-poor (Mo-W-Sn-As-Sb) → base metal-rich (Cu-Pb-Zn) minerals → sulfide-barren hematite-quartz-barite breccia in the deposit center. Spatially isolated remnants of advanced argillic alteration (sericite + quartz ± Al-OH) have been defined for the first time. Progressive Fe oxide addition to, and sericite replacement of the primary host rocks produced distinctive, albeit complex, hydrothermally altered and mineralized zones in the Olympic Dam deposit.