The Role of Carbonaceous Material in the Formation of Macraes Orogenic Gold Deposit, New Zealand
Assoc. Prof. Katy Evans
Dr Kirsten Rempel
Prof. Kliti Grice
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Science and Engineering
The PhD project investigated the role of carbonaceous material in the formation of Macraes orogenic gold deposits. It provided the first evidence that in-situ carbonaceous material directly contributes to Au incorporation into polyframboids which may provide the source of Au for the Macraes gold deposit; that carbonaceous material in mineralized rocks of gold deposit is most likely hydrothermally deposited and contributes to Au precipitation indirectly; and that dodecanethiol may transport Au in hydrothermal systems.
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Ore-forming processes of the daqiao epizonal orogenic gold deposit, west qinling orogen, China: Constraints from textures, trace elements, and sulfur isotopes of pyrite and marcasite, and raman spectroscopy of carbonaceous materialWu, Y.; Li, J.; Evans, Katy; Koenig, A.; Li, Z.; O Brien, H.; Lahaye, Y.; Rempel, Kirsten; Hu, S.; Zhang, Z.; Yu, J. (2018)The Daqiao gold deposit is hosted in organic-rich Triassic pumpellyite-actinolite facies metamorphosed turbidites in the West Qinling orogen, central China. Gold mineralization is characterized by high-grade hydraulic ...
Raman characterization of carbonaceous material in the Macraes orogenic gold deposit and metasedimentary host rocks, New ZealandHu, Siyu; Evans, Katy; Craw, D.; Rempel, Kirsten; Bourdet, J.; Dick, Jeffrey; Grice, Kliti (2015)Raman spectroscopic and petrographic analyses were performed on samples collected from zones distal and proximal to the Macraes gold deposit in the Otago Schist of New Zealand to characterize the features and possible ...
Resolving the role of carbonaceous material in gold precipitation in metasediment-hosted orogenic gold depositsHu, Siyu; Evans, Katy; Craw, D.; Rempel, Kirsten; Grice, Kliti (2017)Carbonaceous material (CM) is commonly associated with gold and sulfides in metasediment-hosted orogenic gold deposits. The role of CM in Au deposition is controversial; CM has been proposed to contribute to gold deposition ...