The Petrology and Volcanology Laboratory is one of the divisions or Sub-KKs of the Geology Knowledge Group that focuses on the study of rocks and volcanic phenomena. Petrology is one of the basic geological sciences that comprehensively studies rocks in the Earth’s crust, including their formation processes, mineral composition, texture, and classification, which includes igneous rocks (formed from solidified magma), pyroclastic rocks (volcanic eruption materials), sedimentary rocks (formed through deposition) and metamorphic rocks (resulting from changes in pressure and temperature). Volcanology is the science that studies everything related to volcanism, including eruption processes, volcanic products, and the impacts and mitigation of volcanic hazards.

Head/Laboratory Manager: Dr. I Gusti Bagus Eddy Sucipta, ST., MT.

Decree Number: 107/IT1.C01/SK-KP/2025 dated June 5, 2025

Functions:

• Education: Provides support through laboratory work in courses related to petrology and volcanology, and facilitates students in conducting observations and analysis of rock samples for learning purposes
• Research: Conducts research in fields related to petrology and volcanology, including rock characterization, mineral identification, petrogenesis analysis, and studies of volcanic phenomena.
• Community Service: Provides services to the scientific community and the mining and petroleum industries by conducting rock and mineral analyses, as well as providing consultation related to the identification and characterization of geological materials.

Activities that have been carried out to support these 3 functions:

• Conducting laboratory work for courses related to petrology and volcanology for undergraduate and postgraduate students.
• Study of Nuclear Power Plant Site Selection (BATAN) involving analysis of rock characteristics and geological structures.
• Petrographic Analysis of Reservoir Rock Samples from Papua (BP Indonesia) to determine hydrocarbon potential.
• Petrographic Analysis of Rock Samples from Sulawesi (PT INCO) for nickel mineral exploration purposes.
• Petrological Study of Carbonate Rocks from the Rajamandala Formation (Research Grant from PT EXXON MOBIL) to understand the characteristics of petroleum reservoir rocks.

Courses served:

• GL2041 Crystallography & Mineralogy – Discusses the fundamentals of crystallography and mineral characteristics, including crystal structure, physical properties, and methods of mineral identification through macroscopic observation.
• GL2042 Petrology – Examines the formation processes, composition, and classification of igneous, sedimentary, and metamorphic rocks, as well as their relationship with geological processes occurring in the Earth’s crust.
• GL3041 Volcanology & Geothermal – Studies volcanic phenomena, eruption mechanisms, volcanic products, and applications in geothermal resource exploration and volcanic disaster mitigation.
• GL3141 Optical Mineralogy & Petrography – Teaches techniques for mineral identification using polarizing microscopes and petrographic analysis to determine the composition and texture of rocks in thin sections.
• GL3142 Mineral Deposits – Discusses the formation processes, classification, and distribution of economic mineral deposits, as well as methods for mineral exploration and reserve evaluation.
• GL4099 Final Project A – Independent research project in petrology or volcanology involving sample collection, laboratory analysis, and interpretation of geological data.
• GL3042 Petrogenesis – Studies magma and rock evolution processes, including fractional crystallization, assimilation, magma mixing, and their relationship with regional tectonics.
• GL5141 Advanced Petrology – A postgraduate course that discusses special topics in petrology with analytical and quantitative approaches using modern technology.
• GL5142 Reservoir Petrography – Examines the microscopic characteristics of hydrocarbon reservoir rocks, including porosity, permeability, and other petrophysical parameters.
• GL5043 Rock Alteration – Discusses processes of mineralogical and textural changes in rocks due to fluid interaction, and their applications in hydrothermal mineral deposit exploration.
• GL5044 Sedimentary Rock Petrology – Examines sedimentation processes, diagenesis, and characteristics of sedimentary rocks in the context of depositional environments and basin evolution.
• GL5143 Igneous Rock Petrology – Studies in depth the formation processes, characteristics, and evolution of igneous rocks in various tectonic settings.

Facilities:

• 180 m² of space consisting of laboratory areas, rock collection storage room, and analysis room.
• Laboratory equipment available:
  • 10 Binocular Microscopes, which function to magnify rock objects and facilitate visual identification of mineralogical characteristics.
  • 13 Polarizing Microscopes, which function to view rocks in thin sections and analyze the optical properties of rock-forming minerals.
  • 3 Reflection Microscopes, which function to view rocks in thin sections (opaque minerals) and identify metallic minerals.
  • 2 Photographic Polarizing Microscopes, which function as tools for photographing rocks in thin sections for documentation and further analysis.

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