Potential for intrusion-hosted Ni-Cu-PGE sulfide deposits in Australia: a continental-scale analysis of mineral system prospectivity

Medientyp: E-Book

Titel: Potential for intrusion-hosted Ni-Cu-PGE sulfide deposits in Australia : a continental-scale analysis of mineral system prospectivity

Enthält: "Magmatic mineral deposits of nickel, copper and the platinum-group elements (Ni-Cu-PGE) form by the immiscible separation and concentration of Ni-Cu-PGE-rich sulfide liquids from magmas of mantle origin. An important sub-type of these deposits is the tholeiitic intrusion-hosted Ni-Cu-PGE sulfide deposit class, typified by the giant Noril'sk (Russia), Voisey's Bay (Canada) and Jinchuan (China) deposits. These contribute significant proportions of the world's production of Ni and PGEs, and represent some of the most valuable mineral deposits on Earth. However, there are very few known tholeiitic intrusion-hosted Ni-Cu-PGE sulfide deposits in Australia, and these are mostly uneconomic due to small size, low grade and/or remoteness. This continental-scale study of the potential for tholeiitic intrusion-hosted Ni-Cu-PGE sulfide deposits in Australia addresses the problem of whether the apparent under-representation of resources of this type in Australia is due to lack of geological endowment or is a consequence of concealment of mineral deposits by sediments, basins and regolith (cover) which has hindered exploration success."
online abstract

Beteiligte: Dulfer, H. [Verfasser:in]; Skirrow, Roger [Verfasser:in]; Champion, D. C. [Verfasser:in]; Highet, L. M. [Verfasser:in]; Czarnota, Karol [Verfasser:in]; Coghlan, Rohan [Verfasser:in]; Milligan, P. R. [Verfasser:in]

Körperschaft: Geoscience Australia

Erschienen: Canberra: Geoscience Australia, 2016

Umfang: 1 Online Resource (vi, 129 Seiten); Illustrationen, Karten

Sprache: Englisch

DOI: 10.11636/Record.2016.001

ISBN: 9781925124941; 1925124940

Identifikator:

Schlagwörter: Australien > Tholeiit > Kupferlagerstätte > Platinlagerstätte > Nickellagerstätte > Intrusion
Australien > Sulfidlagerstätte > Platinmetalle > Prospektion > Geoinformationssystem > Kupferlagerstätte
Australien > Vorkommen > Sulfide > Platin > Sulfiderz

Entstehung:

Anmerkungen: GeoCat 83884. - Bibliography: pages 90-97
Volltext: PDF

Beschreibung: Executive summary -- 1. Introduction -- 1.1. Australia's nickel resources: known and undiscovered -- 1.2. Rationale and aims: a national assessment of Ni-Cu-PGE sulfide mineral potential -- 1.3. Foundation datasets -- 1.4. Digital information products -- 2. Formation of magmatic Ni-Cu-PGE sulfide ore deposits -- 2.1. Model of magmatic Ni-Cu-PGE sulfide ore-forming systems -- 2.2. Fundamental processes in Ni-Cu-PGE ore formation -- 3. Prospectivity analysis method -- 3.1. Mineral systems framework -- 3.2. Prospectivity modelling approach and GIS methods -- 3.3. Theoretical and mappable criteria and weightings -- 4. Tholeiitic intrusion-hosted Ni-Cu-PGE sulfide mineral systems -- 4.1. Mineral system component: energy sources -- 4.2. Mineral system component: lithospheric architecture -- 4.3. Mineral system component: sources of ore metals - Ni, Cu, PGE --4.4. Mineral system component: Ore depositional gradients -- 5. Ni-Cu-PGE sulfide mineral potential of Australia: Results -- 5.1. Overview of results -- 5.2. Discussion of prospective regions -- 6. Summary and Conclusions -- 6.1. Method and results -- 6.2. Limitations of the mineral potential modelling -- References -- Appendix A. GIS modelling workflow and input datasets -- A.1. GIS modelling workflow -- A.2. Energy sources or drivers of the ore forming system -- A.3. Lithospheric architecture -- A.4. Sources of ore metals: Ni, Cu, PGE -- A.5. Ore depositional gradients -- A.6. Final Result -- A.7 References -- Appendix B. Workflow for geochemical datasets -- B.1. Workflow to create geochemical input layers -- B.2. References -- Appendix C. Selection of Ni geochemical data -- Method of selection of Ni-enriched and Ni-depleted geochemical analyses -- C.1. Reference

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