Uncovering ore-forming processes in sediment-hosted copper systems using resistate mineral chemistry: A case study on the Kalkaroo deposit, South Australia

About the research project

Overview

Sediment-hosted copper deposits are major global copper sources, but new discoveries are increasingly challenging as exploration shifts beneath extensive sedimentary cover. Conventional geochemical methods often fail to detect subtle signals from deeply buried systems, increasing risk and cost. This PhD project addresses this by developing advanced indicator mineral chemistry tools to detect, trace, and vector ore-forming systems under cover.

Based at CODES, University of Tasmania, the project contributes to a global, multi-partner study of sediment-hosted deposits, including the Central African Copperbelt, Kupferschiefer, and Curnamona Province. This PhD project is conducted in partnership with Sandfire Resources and Havilah Resources, focusing on the Kalkaroo Cu–Au deposit (northeast South Australia), an active exploration district with extensive datasets.

Geological Context

The Curnamona Province hosts hybrid sediment-hosted and structurally controlled Cu mineralisation within the Willyama Supergroup, analogous to major global systems. At Kalkaroo, mineralisation occurs as stratabound replacement and structurally controlled (breccia-vein) styles beneath Cenozoic cover. Regional albitisation reflects a large hydrothermal footprint, making Kalkaroo an ideal natural laboratory.

Research Focus

At least 50% of the work will analyse resistate mineral chemistry at Kalkaroo to:

• Compare compositions across mineralisation styles, alteration halos, and regolith environments
• Test preservation of mineral-scale signatures through weathering and cover

Additional components may include:

• Geochronology of hydrothermal events
• Integrated geochemical–hyperspectral mineralogical modelling
• Critical metal deportment for processing optimisation

Outcomes

• Mineral chemistry–based vectoring framework
• Indicator mineral workflows for undercover exploration
• Field-ready exploration tools

Industry Collaboration and Opportunities

Industry partners provide site access, drill core, datasets, and field support, enabling real-world application. The candidate will gain industry engagement, field experience, access to advanced facilities, collaboration within a global research team, and opportunities for conferences and professional development.

Primary supervisor

Meet Doctor Matthew Cracknell

Funding

The successful applicant will receive a scholarship which provides:

• a living allowance stipend funded by Sandfire Resources of $34,315 per annum for 3.5 years
• a relocation allowance of up to $2,000
• a tuition fees offset covering the cost of tuition fees for up to four years (domestic applicants only)

A tuition fee offset may be offered to eligible international applicants following competitive assessment 

As part of the application process you may indicate if you do not wish to be considered for scholarship funding.

Additional Funding

In-kind field work support and access to project relevant data

Other funding opportunities and fees

For further information regarding other scholarships on offer, and the various fees for undertaking a research degree, please visit our Scholarships and fees on research degrees page.

Eligibility

Applicants should review the Higher Degree by Research minimum entry requirements.

Ensure your eligibility for the scholarship round by referring to our Key Dates.

Selection criteria

The project is competitively assessed and awarded. Selection is based on academic merit and suitability to the project as determined by the College.

Additional essential selection criteria specific to this project:

Applicants must demonstrate:

• An Honours or MSc degree in geology, geoscience, or a closely related discipline
• Background in mineralogy, geochemistry, or ore deposit geology
• Ability to work independently and as part of a collaborative research team
• Well-developed written and verbal communication skills in English
• Willingness to undertake fieldwork and laboratory-based research

Additional desirable selection criteria specific to this project:

The following skills will be advantageous:

• Experience with mineral chemistry techniques (e.g. LA‑ICP‑MS, EPMA, SEM)
• Familiarity with sediment-hosted copper or basin-scale mineral systems
• Experience working with large or legacy geoscientific datasets
• Interest in applied, industry-facing research
• Basic skills in data analysis, statistics, or geospatial workflows

Application process

1. Select your project, and check that you meet the eligibility and selection criteria, including citizenship;
2. Contact Doctor Matthew Cracknell to discuss your suitability and the project's requirements; and
3. In your application:
   • Copy and paste the title of the project from this advertisement into your application. If you don’t correctly do this your application may be rejected.
   • Submit a signed supervisory support form, a CV including contact details of 2 referees and your project research proposal.
4. Apply prior to 1 August 2026.

Full details of the application process can be found under the ' How to apply ' section of the Research Degrees website.

Following the closing date applications will be assessed within the College. Applicants should expect to receive notification of the outcome by email by the advertised outcome date.

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