Authors / CoAuthors
Jaireth, S.
Abstract
This paper provides a brief summary of mineral potential assessments of uranium deposits in Australia conducted by Geoscience Australia during the last 25 years. The assessment were carried out at different scales which vary from the geological province-scale (1:1 million to 1: 2.5 million) to a more detailed local-scale (1:250 000). The scale and method of assessment were defined by the main objectives of the assessment namely: a) competing land-use issues; b) resource availability; and c) prospectivity analysis for mineral exploration. Mineral potential of uranium deposits was assessed using critical mappable features of fertile uranium mineral systems. A mineral system is generally defined by its constituent elements, which include: (1) sources of energy driving the system; (2) sources of fluids, metals, and ligands; (3) pathways along which melt or fluid move, (4) chemical and/or physical traps in proximity to pathways; and (5) outflow zones for discharge of residual fluids; and (6) preservation (Wyborn et al., 1994; Knox-Robinson and Wyborn 1997; Jaques et al., 2002). These constituent elements and their mappable features are used to construct a probabilistic framework for generating mineral potential maps. The levels of mineral potential are either shown in non-numeric symbols, such as high, moderate and low, or in numeric symbols where potential is calculated by using GIS-based methods, such as index overlay, weights of evidence, and fuzzy logic. The paper also discusses a quantitative assessment of undiscovered uranium resources in sandstone-hosted uranium deposits. The assessment is based on the spatial density of uranium resources in sedimentary basins.
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nonGeographicDataset
eCat Id
71939
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Keywords
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- External PublicationConference Paper
- ( Theme )
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- mineral deposits
- ( Theme )
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- prospectivity
- Australian and New Zealand Standard Research Classification (ANZSRC)
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- Earth Sciences
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- Published_Internal
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2011-01-01T00:00:00
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