scholarly journals THE MINERALOGY OF THE BELLEROPHON-NELSON TELLURIDE-BEARING GOLD DEPOSIT, ST. IVES CAMP, YILGARN CRATON, WESTERN AUSTRALIA

2014 ◽  
Vol 52 (6) ◽  
pp. 981-1006 ◽  
Author(s):  
Yunxing Xue ◽  
Ian Campbell
Keyword(s):  
Gold Deposit ◽  
Western Australia ◽  
Yilgarn Craton

Tellurides from Sunrise Dam gold deposit, Yilgarn Craton, Western Australia: a new occurrence of nagyágite

2007 ◽  
Vol 91 (3-4) ◽  
pp. 249-270 ◽  
Author(s):  
Y.-H. Sung ◽  
C. L. Ciobanu ◽  
A. Pring ◽  
J. Brügger ◽  
W. Skinner ◽  
...  
Keyword(s):  
Gold Deposit ◽  
Western Australia ◽  
Yilgarn Craton

scholarly journals The (U-Th)/He Chronology and Geochemistry of Ferruginous Nodules and Pisoliths Formed in the Paleochannel Environments at the Garden Well Gold Deposit, Yilgarn Craton of Western Australia: Implications for Landscape Evolution and Geochemical Exploration

Minerals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 679
Author(s):  
Ravi R. Anand ◽  
Martin A. Wells ◽  
Melvyn J. Lintern ◽  
Louise Schoneveld ◽  
Martin Danišík ◽  
...  
Keyword(s):  
Gold Deposit ◽  
Western Australia ◽  
Environmental Conditions ◽  
Landscape Evolution ◽  
Mineral Exploration ◽  
Yilgarn Craton ◽  
Geochemical Exploration ◽  
Parent Materials

Ferruginous nodules and pisoliths that cap deeply weathered profiles and transported cover are characteristic of the Yilgarn Craton, Western Australia. Here we show how ferruginous nodules and pisoliths formed in the paleochannel sediments during Miocene can be used to locate buried Au mineralization. Three types of ferruginous nodules and pisoliths were identified in paleochannel sediments and saprolite, representing different parent materials and environments covering the Garden Well Au deposit: (i) ferruginous nodules formed in saprolite on the flanks of the paleochannel (NSP), (ii) ferruginous pisoliths formed in the Perkolilli Shale in the middle of the paleochannel (PPS) and (iii) ferruginous nodules formed in the Wollubar Sandstone at the bottom of the paleochannel (NWS). The appearance, mineralogy and geochemistry of ferruginous nodules and pisoliths vary according to their origin. The PPS and NWS are goethite-rich whereas NSP is a mixture of goethite and hematite which make them all suitable for (U–Th)/He dating. The average age of goethite in the NSP is 14.8 Ma, in the NWS is 11.2 Ma and in the PPS is 18.6 and 14 Ma. The goethite ages in ferruginous nodules and pisoliths are thought to be younger than the underlying saprolite (Paleocene-Eocene) and were formed in different environmental conditions than the underlying saprolite. Anomalous concentrations of Au, As, Cu, Sb, In, Se, Bi, and S in the cores and cortices of the NWS and the PPS reflect the underlying Au mineralization, and thus these nodules and pisoliths are useful sample media for geochemical exploration in this area. These elements originating in mineralized saprolite have migrated both upwards and laterally into the NWS and the PPS, to form spatially large targets for mineral exploration.

P-T-X Conditions of Fluids in the Sunrise Dam Gold Deposit, Western Australia, and Implications for the Interplay between Deformation and Fluids

2010 ◽  
Vol 105 (5) ◽  
pp. 873-894 ◽  
Author(s):  
T. Baker ◽  
M. Bertelli ◽  
T. Blenkinsop ◽  
J. S. Cleverley ◽  
J. McLellan ◽  
...  
Keyword(s):  
Gold Deposit ◽  
Western Australia

Proterozoic deformation in the northwest of the Archean Yilgarn Craton, Western Australia

2008 ◽  
Vol 162 (3-4) ◽  
pp. 354-384 ◽  
Author(s):  
Catherine V. Spaggiari ◽  
Jo-Anne Wartho ◽  
Simon A. Wilde
Keyword(s):  
Western Australia ◽  
Yilgarn Craton

U-Pb and Sm-Nd Evidence for Episodic Orogenic Gold Mineralization in the Kalgoorlie Gold Camp, Yilgarn Craton, Western Australia

2021 ◽  
Author(s):  
Jordan A. McDivitt ◽  
Steffen G. Hagemann ◽  
Anthony I.S. Kemp ◽  
Nicolas Thébaud ◽  
Christopher M. Fisher ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Western Australia ◽  
Late Stage ◽  
Gold Mineralization ◽  
Hydrothermal Systems ◽  
Orogenic Gold ◽  
Yilgarn Craton ◽  
Gold Telluride ◽  
Icp Ms ◽  
Metamorphic Fluids

Abstract Different genetic and timing models for gold mineralization in the Kalgoorlie gold camp (Yilgarn craton, Western Australia) suggest either broadly synchronous, late-stage mineralization related to metamorphic fluids at ca. 2640 Ma or a punctuated mineralization history from ca. 2675 to 2640 Ma with the involvement of early magmatic-hydrothermal systems (represented by the Fimiston, Hidden Secret, and Oroya gold-telluride lodes) and late metamorphic fluids (represented by the Mt. Charlotte gold stockwork veins). The results of U-Pb and Sm-Nd geochronological studies of zircon, apatite, and titanite from pre-ore dikes and syn-ore dikes constrain the absolute timing of mineralization and provide new evidence to this timing controversy. Emplacement ages constrained by U-Pb sensitive high-resolution ion microprobe (SHRIMP) zircon data are interpreted to be similar for both the pre-ore dikes (n = 10) and syn-ore dikes (n = 7) at ca. 2675 Ma. An inferred emplacement age of ca. 2675 Ma for the syn-ore dikes is supported by a Sm-Nd isochron age from apatite (laser ablation-inductively coupled plasma-mass spectrometry; LA-ICP-MS) of 2678 ± 15 Ma and by a U-Pb titanite age (LA-ICP-MS) of 2679 ± 6 Ma. The results of chemical abrasion-isotope dilution-thermal ionization mass spectrometry U-Pb zircon analysis from the pre- and syn-ore dikes are complicated by multistage Pb loss, reverse discordance, and potential inheritance. However, the data are compatible with the emplacement of Fimiston/Hidden Secret gold mineralization at ca. 2675 Ma and suggest a younger age for Oroya mineralization at ca. 2665 Ma. These results contrast with models for orogenic gold deposits that invoke broadly synchronous, late-stage mineralization related to metamorphic fluids at ca. 2640 Ma. The bulk of the Kalgoorlie gold camp’s estimated 2,300 t Au endowment was emplaced at ca. 2675 Ma as Fimiston/Hidden Secret Au mineralization. This early Au mineralization was deformed and overprinted twice by subordinate Au mineralization at ca. 2665 (Oroya mineralization) and ca. 2640 Ma (Mt. Charlotte mineralization). Gold mineralization in the Kalgoorlie gold camp was protracted in nature from ca. 2675 to 2640 Ma and reflects the interplay of early magmatic (Fimiston, Hidden Secret, Oroya) and late metamorphic (Mt. Charlotte) hydrothermal fluid systems in the formation of hybrid intrusion-related and metamorphic orebodies.

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