Potensi Pemanfaatan Batugamping di Quarry Petik DuaYPetik Dua Plant Narogong PT Solusi Bangun Indonesia Tbk Berdasarkan Karakteristiknya

Angga Wahyu Pratama, Ir. Anastasia Dewi Titisari, M.T., Ph.D., IPU.; Agus Hendratno, S.T., M.T.

2026 | Skripsi | TEKNIK GEOLOGI

Indonesia, khususnya Provinsi Jawa Barat, memiliki potensi cadangan batugamping mencapai 3.551.677.884 ton yang memiliki nilai strategis sebagai bahan baku berbagai sektor industri. Salah satu produsen yang memanfaatkan batugamping tersebut adalah PT Solusi Bangun Indonesia Tbk Plant Narogong, dengan memiliki beberapa izin penambangan quarry di daerah Nambo, Kecamatan Klapanunggal, Kabupaten Bogor, Provinsi Jawa Barat. Akan tetapi, terdapat satu quarry batugamping milik PT Solusi Bangun Indonesia Tbk Plant Narogong yaitu Quarry “Y”, yang kurang ekonomis apabila dijadikan sebagai bahan baku utama semen portland. Oleh sebab itu, penelitian ini bertujuan mengetahui kondisi geologi serta karakteristik geokimia, dan keteknikan batugamping untuk merumuskan rekomendasi variasi pemanfaatan alternatif yang paling optimal di bidang industri lain seperti industri kertas, kaca, keramik, karbid, soda abu, pemurnian besi dan baja, cat, plastik, karet, serta digunakan sebagai batu dimensi dan bahan konstruksi. Metode yang digunakan dalam penelitian yaitu pemetaan geologi lapangan, analisis petrografi, analisis geokimia menggunakan X-Ray Fluorescence (XRF), serta analisis keteknikan batuan berupa densitas, kuat tekan, ketahanan aus, dan daya serap air. Persebaran batugamping di Quarry “Y” berupa satuan batugamping floatstone (foraminifera floatstone dan algae floatstone) dan satuan batugamping rudstone (algae rudstone), dengan struktur yang berkembang berupa kekar ekstensi, kekar gerus, dan sesar oblik. Secara petrografi, batugamping di Quarry “Y” disusun atas material matriks lumpur, matriks butiran, dan bioklas berupa red algae, green algae, foraminifera, dan pecahan moluska hingga koral. Berdasarkan karakteristik geokimianya, batugamping di Quarry “Y” memiliki kadar oksida mayor dengan persentase CaO (45,51% - 54,93%) dan MgO (0,41% - 3,34%), serta impurities SiO₂ (0,01% - 10,15%), Al₂O₃ (0,35% - 1,64%), Fe₂O₃ (0,01% - 0,64%). Berdasarkan karakteristik keteknikannya, batugamping di Quarry “Y” memiliki nilai densitas sebesar 2254 kg/m³ - 2787 kg/m³, kuat tekan sebesar 95,47 kg/cm² - 321,38 kg/cm², ketahanan aus sebesar 0,029 mm/menit - 0,193 mm/menit, dan daya serap air sebesar 0,3% - 6,7%. Dari evaluasi karakteristik geokimia, batugamping di Quarry “Y” direkomendasikan secara penuh sebagai bahan baku cat, karet, plastik dan secara selektif dapat dimanfaatkan untuk proses pemurnian besi dan baja dan produksi karbid, kemudian dinilai layak secara bersyarat sebagai bahan baku industri semen, soda abu, dan kertas dengan proses percampuran (blending) tambahan. Kemudian dari evaluasi karakteristik keteknikan, batugamping di Quarry “Y” direkomendasikan sebagai batu dimensi Kelas I dan II.

Indonesia, particularly West Java Province, has potential limestone reserves of 3,551,677,884 metric tons, which hold strategic value as a raw material for various industrial sectors. One of the producers utilizing this limestone is PT Solusi Bangun Indonesia Tbk’s Narogong Plant, which holds several quarry mining permits in the Nambo area, Klapanunggal Subdistrict, Bogor Regency, West Java Province. However, one limestone quarry owned by PT Solusi Bangun Indonesia Tbk’s Narogong Plant, there is the “Y” Quarry that is not economically viable when used as the primary raw material for Portland cement. Therefore, this study aims to investigate the geological conditions, geochemical characteristics, and engineering properties of the limestone to formulate recommendations for the most optimal alternative uses in other industries, such as the paper, glass, ceramics, carbide, soda ash, iron and steel refining, paint, plastic, and rubber industries, as well as for use as dimension stone and construction material. The methods used in this study included field geological mapping, petrographic analysis, geochemical analysis using X-ray fluorescence (XRF), and engineering rock property analysis, including density, compressive strength, abrasion resistance, and water absorption. The distribution of limestone at the “Y” Quarry consists of floatstone limestone (foraminifera floatstone and algae floatstone), and rudstone limestone (algae rudstone), with developed structures including extensional joints, shear joints, and oblique faults. Petrographically, the limestone at the “Y” Quarry consists of lime mud matrix, grains matrix, and bioclastic material in the form of red algae, green algae, foraminifera, and fragments of mollusks and corals. Based on its geochemical characteristics, the limestone at the “Y” Quarry contains major oxides with percentages of CaO (45,51%–54,93%) and MgO (0,41%–3,34%), as well as impurities of SiO? (0,01%–10,15%), Al?O? (0,35%–1,64%), and Fe?O? (0,01%–0,64%). Based on its engineering properties, the limestone at the “Y” Quarry has a density of 2,254 kg/m³ – 2,787 kg/m³, a compressive strength of 95,47 kg/cm² – 321,38 kg/cm², an abrasion resistance of 0,029 mm/minute – 0,193 mm/minute, and a water absorption rate of 0,3% – 6,7%. Based on the evaluation of geochemical characteristics, the limestone at Quarry “Y” is fully recommended as a raw material for paint, rubber, and plastics, and can be selectively utilized for iron and steel refining processes and carbide production; it is also conditionally deemed suitable as a raw material for the cement, soda ash, and paper industries with additional blending processes. Furthermore, based on an evaluation of its engineering characteristics, the limestone at Quarry “Y” is recommended as dimensional stone, particularly Grade I and II.

Kata Kunci : batugamping, quarry, narogong, geologi, geokimia, keteknikan, pemanfaatan/ limestone, quarry, narogong, geological, geochemical, engineering properties, utilization