Petrography and ore mineral study at Beruang Kanan Site, Gunung Mas Regency, Central of Kalimantan Province

Abstract

The methodology mainly includes four parts: pre-field studies, field investigations, laboratory analysis, and data analysis and interpretation. Laboratory analysis to be carried out is petrographic analysis and ore microscope. Research methods relating to petrography analysis studies and ore mineral that will be evaluated for genetic models and the origin of copper deposition mineralization. The rock units in the study area are differentiated based on the type of lithology, uniformity of rocks, the distribution of rocks and rock geometry found in one region and the stratigraphic position of the units below it or above it. In general, the stratigraphy of the research area is divided into 3 rock units that can be seen on the geological map, sequences from old to young, namely lithology of Sandstone Unit, Dense Tuf Unit, and Andesite Unit. ore mineralization generally occurs as a massive form, vein. Pyrite, enargite, luzonite, sphalerite, covellite, chalcopyrite, tennatite and tetrahedtrite are common sulfides and sulfosal minerals.