Veins System of Mineralization in The Polymineral Deposits of Beruang Kanan Site, Central Kalimantan

DOI

10.2991/978-94-6463-732-8_15How to use a DOI?

Keywords

Mineralization; Epithermal; Vein; Fracture; Mineral

Abstract

The research location is in the Beruang Kanan area, Tumbang Miri District, Gunung Mas Regency, Central Kalimantan Province. Epithermal sulphidation deposits are generally formed at a depth of 300 - 800 m (rarely > 1000 m). These deposits are formed on host rocks such as domes, diatremes (Andesite-Ryodasite), pyroclastic, and clastic volcanic rocks. Deposits formed by the epithermal system usually have deposits in the form of veins, hydrothermal breccias, and dissemination. The typical ore texture of this deposit is a coarse band. The Beruang Kanan area consists primarily of polymineral mineralization. Associated mineralization is generally controlled by structure. It is highly oxidized near the surface. Mineralization is hosted by volcanic and volcaniclastic rocks in the study area, especially in the center and southeast of the study area. Veins in the study area were identified through field observations, thin sections and polishing sections. The vein system that develops in the research area is filling extensional fractures and dilational jogs associated with the fractures. The veins formed in the research area include massive sulfide veins with a dominant composition of pyrite-chalcopyrite-covelite-bornite sulfide minerals, as well as hematite-goethite quartz-oxide which is also associated with quartz with an enormous vein texture, in addition, there are breccia veins and veins with a drusy texture filling the cracks.

Copyright

© 2025 The Author(s)

Open Access

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TY  - CONF
AU  - Retno Anjarwati
AU  - Sutarto Sutarto
AU  - Dwi Fitri Yudiantoro
AU  - Arifudin Idrus
PY  - 2025
DA  - 2025/06/07
TI  - Veins System of Mineralization in The Polymineral Deposits of Beruang Kanan Site, Central Kalimantan
BT  - Proceedings of the International Conference on Tropical Studies and Its Application (ICTROPS 2024)
PB  - Atlantis Press
SP  - 166
EP  - 171
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-732-8_15
DO  - 10.2991/978-94-6463-732-8_15
ID  - Anjarwati2025
ER  -