Senior Geologist - Resource Estimation

Placements24; Randburg; On-site; ZAR 1,100,000 - 1,600,000; Full time

Benefits offered by this job

Medical aid

Provident fund

Performance-based bonus

Professional development

Job summary

Placements24 is seeking a Senior Geologist in Randburg to lead resource estimation and geological modelling for multiple mining projects. You will build robust geological models from drillhole data, apply advanced geostatistical methods, and generate resource estimates compliant with international codes.

Collaborate with exploration, mine planning, and operations to ensure quality data and actionable outputs.

Qualifications

• Honours degree in Geology or Earth Science with specialization in Geostatistics or Mineral Economics.
• At least 8 years of experience in geological resource estimation within the mining industry.
• Proven expertise in geostatistical analysis and resource modelling software (Leapfrog Geo, Vulcan, Datamine, ioGAS).
• Strong understanding of mineral deposit types and their geological controls.
• Proficiency in applying JORC and SAMREC reporting codes.
• Excellent analytical, quantitative, and problem solving skills.
• Strong written and verbal communication for technical reporting and presentations.
• Experience in the Gauteng region or with similar commodities is advantageous.
• Registered with SACNASP (Pr.Sci.Nat) preferred.

Responsibilities

• Develop and validate geological models based on drillhole data, mapping, and other info.
• Perform geostatistical analysis including variography and domain modeling for resource estimation.
• Generate resource estimates compliant with JORC/SAMREC or other codes.
• Collaborate with exploration teams to ensure data quality for modeling.
• Provide input for mine design and production scheduling from models.
• Prepare technical reports and presentations of resource estimates.
• Conduct geological data audits and quality control checks.
• Stay updated with best practices in estimation techniques and software.
• Mentor junior geologists in estimation activities.
• Contribute to the mineral resource management strategy.

Skills

Geostatistics

Resource estimation

Geology

Data modelling

JORC/SAMREC reporting

Analytical thinking

Communication

Mentoring

Education

Honours Degree in Geology or Earth Science with Geostatistics/Mineral Economics

Tools

Leapfrog Geo

Vulcan

Datamine

ioGAS

Job description

About the Role

Our client, a prominent diversified mining company with operations in Randburg, Gauteng, is seeking a highly skilled Senior Geologist specializing in Resource Estimation. This permanent, office-based role is integral to accurately defining and quantifying the mineral resources for various mining projects. The Senior Geologist will be responsible for developing robust geological models, performing statistical analysis, and applying estimation techniques to generate reliable resource estimates in compliance with international reporting codes (e.g., JORC, SAMREC). You will work closely with exploration, mine planning, and operations teams to ensure the geological data is of high quality and that estimates accurately reflect the potential of the orebodies. This position requires a strong understanding of geological principles, advanced geostatistical methods, and proficiency in industry-standard modeling software. The successful candidate will play a critical role in guiding investment decisions and optimizing resource utilization for the company's assets. This is an exceptional opportunity to contribute your expertise to a leading mining organization in the heart of Gauteng.

Key Responsibilities

• Develop and validate geological models based on drillhole data, geological mapping, and other relevant information.
• Perform geostatistical analysis, including variography, domain modeling, and resource estimation using appropriate software.
• Generate resource estimates in compliance with JORC, SAMREC, or other relevant codes.
• Collaborate with exploration teams to ensure data quality and appropriate geological data acquisition for resource modeling.
• Work closely with mine planning engineers to provide input for mine design and production scheduling based on resource models.
• Prepare detailed technical reports, documentation, and presentations of resource estimates for internal and external stakeholders.
• Conduct geological data audits and quality control checks.
• Stay abreast of best practices and advancements in resource estimation techniques and software.
• Mentor junior geologists involved in resource estimation activities.
• Contribute to the company's mineral resource management strategy.

Requirements

• Honours Degree in Geology or Earth Science with a specialization in Geostatistics or Mineral Economics.
• A minimum of 8 years of experience in geological resource estimation within the mining industry.
• Proven expertise in geostatistical analysis and resource modeling software (e.g., Leapfrog Geo, Vulcan, Datamine, ioGAS).
• Strong understanding of mineral deposit types and their geological controls.
• Proficiency in applying industry-standard resource reporting codes (JORC, SAMREC).
• Excellent analytical, quantitative, and problem-solving skills.
• Strong written and verbal communication skills for technical reporting and presentations.
• Experience working in the Gauteng region or with similar commodity types is advantageous.
• Ability to work independently and collaboratively within a team environment.
• Registered Professional Natural Scientist (Pr.Sci.Nat) with SACNASP is preferred.

Benefits

Our client offers a competitive salary, comprehensive medical aid, provident fund, and performance-based bonuses. This permanent, office-based role provides a stable and professional working environment in Randburg. You will benefit from ongoing professional development opportunities and clear career progression pathways within a leading mining house. Join a highly skilled team dedicated to technical excellence and responsible resource management. This role offers the chance to significantly impact the strategic direction of resource development for a major mining company. Our client is committed to fostering a safe and inclusive workplace that values expertise and innovation.