Arid
DOI10.1016/j.oregeorev.2018.11.003
Gold and pathfinder elements in ferricrete gold deposits of the Yilgarn Craton of Western Australia: A review with new concepts
Anand, R. R.1; Hough, R. M.1; Salama, W.1; Aspandiar, M. F.2; Butt, C. R. M.1; Gonzalez-Alvarez, I.1,3; Metelka, V.1
通讯作者Anand, R. R.
来源期刊ORE GEOLOGY REVIEWS
ISSN0169-1368
EISSN1872-7360
出版年2019
卷号104页码:294-355
英文摘要

Secondary mineral deposits have played an important role in the global mineral resource economy for over 50 years, with lateritic Au, Al, Fe and Ni deposits having a significant input to global metal production and reserves. In the Yilgarn Craton of Western Australia, a deeply weathered mantle is commonly capped with 2-10 m of lateritic residuum (residual lateritic gravels and duricrust) and/or ferricrete (Fe oxide-cemented sediment), which formed under seasonally humid tropical and sub-tropical climates during the Cenozoic. The principal constituents of these units are goethite, hematite, maghemite, kaolinite and quartz. They are commonly overlain by younger, 2-10 m thick transported cover, deposited under later semi-arid conditions. Both ferricrete and lateritic residuum may host exploitable secondary gold deposits, typically small (< 500,000 ounces) and of low grade (< 1-5 g/t Au). The lateritic residuum deposits overlie weathered and fresh primary mineralization, whereas ferricrete deposits overlie uneconomic primary mieralization or barren saprolite and bedrock. Despite numerous studies, many questions remain about the behaviour and evolution of Au in the complex polygenetic systems that form lateritic residuum and ferricrete. In particular, why is it difficult to locate significant primary mineralization associated with highly Au-anomalous ferricrete? Understanding the mechanisms of enrichment of Au and pathfinder elements in ferricrete will assist future discovery. Accordingly, to obtain conclusive evidence for processes of anomaly formation, a combination of detailed field observations with state-of-the-art microscopy have been conducted at three of the larger deposits (Moolart Well, Mt Gibson and Bulchina). The aim of this review is to integrate these recent results with the results of earlier studies to trace the path of Au and pathfinder elements and associated dispersion processes in the ferricrete environment.


英文关键词Ferricrete Lateritic residuum Landscape evolution Geochemical dispersion Gold Mechanisms of dispersion Exploration
类型Review
语种英语
国家Australia
收录类别SCI-E
WOS记录号WOS:000460710600019
WOS关键词NANO-PARTICULATE GOLD ; GEOCHEMICAL-EXPLORATION ; LATERITIC PROFILE ; DETRITAL ZIRCONS ; DONDO-MOBI ; PALEOGEOGRAPHIC EVOLUTION ; MINERAL EXPLORATION ; EASTERN GOLDFIELDS ; PERTH BASIN ; IRON
WOS类目Geology ; Mineralogy ; Mining & Mineral Processing
WOS研究方向Geology ; Mineralogy ; Mining & Mineral Processing
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/217820
作者单位1.Australian Resources & Res Ctr, CSIRO Mineral Resources, Kensington, WA 6151, Australia;
2.Curtin Univ, Western Australia Sch Mines, Dept Appl Geol, Kent St, Bentley, WA 6151, Australia;
3.Univ Western Australia, Ctr Explorat Targeting, Crawley, Australia
推荐引用方式
GB/T 7714
Anand, R. R.,Hough, R. M.,Salama, W.,et al. Gold and pathfinder elements in ferricrete gold deposits of the Yilgarn Craton of Western Australia: A review with new concepts[J],2019,104:294-355.
APA Anand, R. R..,Hough, R. M..,Salama, W..,Aspandiar, M. F..,Butt, C. R. M..,...&Metelka, V..(2019).Gold and pathfinder elements in ferricrete gold deposits of the Yilgarn Craton of Western Australia: A review with new concepts.ORE GEOLOGY REVIEWS,104,294-355.
MLA Anand, R. R.,et al."Gold and pathfinder elements in ferricrete gold deposits of the Yilgarn Craton of Western Australia: A review with new concepts".ORE GEOLOGY REVIEWS 104(2019):294-355.
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