Senior Mineralogist (West Kalimantan)

Talent Search Recruitment; Jakarta Utara; On-site; IDR 200.000.000 - 300.000.000; Full time

Job summary

A leading multinational coal mining company is seeking a Senior Mineralogist to support exploration and processing optimization in West Kalimantan. The ideal candidate should have a Bachelor's or Master's degree in Mineralogy or related fields, with 8-12 years of relevant experience, including hands-on expertise in bauxite. Strong analytical and communication skills are required for this pivotal role that involves mentoring junior staff and collaboration across various teams. Willingness to work on-site or in a 9:2 roster is essential.

Qualifications

• Minimum 8–12 years of relevant experience in mineralogy within mining or mineral processing operations.
• Strong technical understanding of critical minerals, with hands-on bauxite experience being highly preferred.
• Proven experience with laboratory techniques and mineralogical data interpretation.

Responsibilities

• Conduct detailed mineralogical studies to support exploration and mine development.
• Provide inputs to support beneficiation and processing flowsheet development.
• Mentor junior technical staff and contribute to building local mineralogy capability.

Skills

Mineralogical characterization

Analytical skills

Cross-functional communication

Education

Bachelor's or Master's degree in Mineralogy, Geology, Geoscience

Tools

XRD

XRF

Optical microscopy

SEM/EDS

Job description

Our client is a leading multinational coal mining company primarily involved in coal mining operations in Kalimantan.

Role Summary

The Senior Mineralogist will play a key technical role in supporting exploration, resource evaluation, and processing optimization for critical mineral projects. This position requires strong hands-on experience in mineralogical characterization, with bauxite and related aluminum-bearing minerals being highly advantageous. The role will work closely with geology, mining, metallurgy, and processing teams to ensure accurate mineralogical inputs for decision-making.

Key Responsibilities

• Conduct detailed mineralogical studies to support exploration, resource definition, and mine development.
• Perform and interpret mineral characterization using techniques such as XRD, XRF, optical microscopy, SEM/EDS, and other relevant methods.
• Provide mineralogical inputs to support beneficiation, refining, and processing flowsheet development, particularly for bauxite and associated critical minerals.
• Collaborate with geology, mining, and metallurgical teams to optimize ore quality, blending strategies, and recovery.
• Support due diligence, technical reporting, and feasibility studies (Scoping, PFS, FS).
• Interpret mineralogical variability and its impact on processing performance and product quality.
• Ensure all technical work complies with company standards, Indonesian regulations, and international best practices.
• Mentor junior technical staff and contribute to building local mineralogy capability.

Requirements

• Bachelors or Masters degree in Mineralogy, Geology, Geoscience, or a related discipline.
• English is important.
• Minimum 8–12 years of relevant experience in mineralogy within mining or mineral processing operations.
• Strong technical understanding of critical minerals, with hands-on bauxite experience being highly preferred.
• Proven experience with laboratory techniques and mineralogical data interpretation.
• Experience working in tropical laterite or similar geological environments is an advantage.
• Strong reporting, analytical, and cross-functional communication skills.
• Willingness to be based on-site or on a 9:2 roster in West Kalimantan.