Senior Mineralogist (West Kalimantan)

Job Title: Senior Mineralogist West Kalimantan, Indonesia

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.

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