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

The regional tectonic conditions of the KSK Contract of Work are located in the mid-Tertiary magmatic arc (Carlile and Mitchell, 1994) which host a number of epithermal gold deposits (eg, Kelian, Indon, Muro) and significant prospects such as Muyup, Masupa Ria, Gunung Mas and Mirah. Copper-gold mineralization in the KSK Contract of Work is associated with a number of intrusions that have occupied the shallow-scale crust at the Mesozoic metamorphic intercellular junction to the south and continuously into the Lower Tertiary sediment toward the water. This intrusion is interpreted to be part of the Oligocene arc of Central Kalimantan (in Carlile and Mitchell 1994) Volcanic rocks and associated volcanoes are older than intrusions, possibly aged Cretaceous and exposed together with all three contacts (Carlile and Mitchell, 1994) some researchers contribute details about the geological and mineralogical background, and some papers for that are published for the Beruang Kanan region and beyond but no one can confirm the genesis type of the Beruang Kanan region The mineralization of the Beruang Kanan area is generally composed by high yields of epithermal sulphide mineralization. with Cu-Au mineralization This high epithermal sulphide deposition coats the upper part of the Cu-Au porphyry precipitate associated with mineralization processes that are generally controlled by the structure

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Tujuan dari penelitian ini adalah untuk mengetahui tonase batubara berdasarkan tingkat kepercayaan geologi ke dalam kategori sumberdaya tereka, tertunjuk, dan terukur menggunakan metode Circular 891 USGS. Penelitian ini juga dilakukan melalui pemetaan geologi detail daerah penelitian yaitu di Desa Tanah Merah, Kota Samarinda, kemudian dilakukan korelasi antar singkapan batubara guna mengetahui sebaran batubara tersebut. Setelah mengetahui sebaran batubara dapat dilakukan perhitungan sumberdaya tereka, tertunjuk dan terukur. Data yang diperoleh dari penelitian ini yaitu data singkapan batubara yang ditemukan di daerah penelitian. Data hasil pengamatan lapangan yang telah didapatkan kemudian diolah menggunakan rumus perhitungan volume dan tonase batubara, untuk sumberdaya tereka diperoleh hasil 945.468,74 m3, tertunjuk diperoleh hasil 700.020,23 m3, sedangkan untuk sumberdaya terukur diperoleh hasil 349.335,77 m3, kemudian dikalikan dengan densitas batubara yaitu 1,3 ton/m3. Estimasi sumberdaya tereka dengan radius 750 m diperoleh tonase sebesar 1.229.109,36 ton, sumberdaya tertunjuk dengan radius 500 m diperoleh tonase sebesar 910.026,30 ton. Sedangkan sumberdaya terukur dengan radius 250 m diperoleh tonase sebesar 454.136,50 ton.