Principal Resource Geologist

SOUTH32 Limited; Patagonia (AZ); On-site; USD 140,000 - 200,000; Full time

Benefits offered by this job

Annual bonus

Retirement match

Paid time off

Parental leave

Job summary

South32 Group Operations Pty. Ltd. seeks a Principal Resource Geologist for the Hermosa Project site near Patagonia, Arizona. You will lead Mineral Resource modelling, ensure data integrity, and support critical business decisions with accurate resource evaluations.

The role requires a B.Sc. or higher in Geology and at least 15 years in geology, including resource and mine geology, with competency as a Mineral Resource CP and strong JORC knowledge. Collaboration across teams is essential.

Qualifications

• Minimum 15 years of geology experience including resource and mine geology.
• Experience as Mineral Resource Competent Person.
• Strong knowledge of JORC code and mineral economics.
• B.Sc. or higher in Geology.
• Experience with resource modelling and estimation.

Responsibilities

• Define mineral inventory and resource base for operations.
• Assist with exploration work programs.
• Provide geoscientific expertise to operations.
• Undertake timely reporting and declaration of Mineral Resources.

Skills

Geology expertise

Resource estimation

Geostatistics

Drilling techniques

Data analysis

JORC knowledge

Mineral economics

Education

B.Sc. in Geology

Job description

Company: South32 Group Operations Pty. Ltd.

Discover a Brighter Future

At South32, we’re meeting the challenge of enabling a sustainable future through our focus on responsibly producing commodities critical for a low-carbon world.

As a collaborative, caring and inclusive company, there’s no better place to make a genuine difference. Together we’re making a positive, global impact that has the potential to change lives.

Whatever career path you choose, we’ll support you every step of the way to learn, grow and succeed. So join us, step towards a brighter future and leave your legacy.

ABOUT Hermosa

Hermosa, located approximately 75 miles south‑east of Tucson, Arizona, is the only advanced mining project in the United States as of 2023 that could produce two federally designated critical minerals—manganese and zinc—as well as silver and lead. The project has the potential to help power the nation’s clean energy future, strengthen the domestic supply chain of critical minerals, grow the local economy, and improve lives in Santa Cruz County and the surrounding community for generations to come.

WHAT SOUTH32 OFFERS

• Annual short-term incentive bonus that recognizes both your individual performance and the overall success of the business.
• When you choose to contribute more into your retirement savings, South32 will match it up to a certain percentage.
• South32 provides you with 4 weeks paid time off.
• 12 weeks full‑paid parental leave for primary careers and 2 weeks full‑paid parental leave for secondary careers

ABOUT THE ROLE

As thePrincipal Resource Geologist, you will lead and oversee all Mineral Resource modeling activities for the Hermosa Project, ensuring the delivery of high-quality geological interpretations, resource models, and Mineral Resource estimates. This role is responsible for maintaining data integrity, applying industry best practices in resource estimation, and supporting critical business decisions through accurate resource evaluation and reporting. This role works closely with exploration, mine planning, geotechnical, metallurgical, and operational teams to define and enhance the project's mineral inventory and resource base. This position is based at the Hermosa Project site near Patagonia, Arizona.

Other key responsibilities include, but aren’t limited to:

• Defines the mineral inventory and resource base for our operations and ensures internal and external reporting requirements are met
• Assists with the development of exploration work programs
• Provides geoscientific expertise to the operations and other functions as required by the business
• Undertakes the timely reporting and declaration of Mineral Resources

ABOUT YOU

• B.Sc. or higher in Geology (or equivalent)
• Minimum 15 years of geology experience including experience in resource geology as well as exploration and mine geology.
• Experience acting as a Mineral Resource Competent Person (or equivalent).
• An advanced understanding of the principles of exploration and mine geology.
• Knowledge of sampling theory, sampling, and drilling techniques.
• An advanced understanding of exploratory data analysis, geostatistics, resource modelling and estimation.
• Strong understanding of the JORC code.
• An understanding of mineral economics, discounted cash flow analysis including the modelling of uncertainty.

South32 is committed to building and maintaining an inclusive and diverse workforce that reflects the communities in which we operate. We provide a recruitment process that is fair, equitable and accessible for all and we encourage candidates from all backgrounds to apply.