STUDI POTENSI TERBENTUKNYA CEBAKAN MINERAL RADIOAKTIF PADA BATUAN GRANITIK DI PULAU SULAWESI

THE STUDY ON THE POTENTIAL OF RADIOACTIVE MINERAL DEPOSITS FORMATION IN GRANITIC ROCKS IN SULAWESI ISLAND

  • Ngadenin Pusat Teknologi Bahan Galian Nuklir – Badan Tenaga Nuklir Nasional
  • Widodo Pusat Teknologi Bahan Galian Nuklir – Badan Tenaga Nuklir Nasional
  • Rachman Fauzi Pusat Teknologi Bahan Galian Nuklir – Badan Tenaga Nuklir Nasional
  • Fadiah Pratiwi Pusat Teknologi Bahan Galian Nuklir – Badan Tenaga Nuklir Nasional
Kata Kunci: cebakan mineral, mineral radioaktif, uranium, thorium, granitik, Sulawesi

Abstrak

Di Pulau Sulawesi terdapat banyak batuan granitik yang berpotensi mengandung cebakan mineral radioaktif. Tujuan penelitian ini adalah menentukan tipe cebakan mineral radioaktif berdasarkan karakteristik radioaktivitas, kadar uranium dan mineralogi yang bersumber dari batuan granitik tertentu. Data yang digunakan meliputi pengukuran radioaktivitas, kadar uranium, hasil pengamatan megaskopis dan petrografis batuan serta analisis butir mineral berat batuan granitik hasil eksplorasi uranium di Pulau Sulawesi. Batuan granitik terdiri dari granit, granit biotit, granodiorit, granodiorit biotit, granodiorit hornblenda, granodiorit biotit hornblenda, granodiorit hornblenda biotit, adamelit biotit, adamelit biotit hornblenda, adamelit hornblenda biotit, diorit, diorit hornblenda biotit dan syenit. Radioaktivitas batuan granitik 50 s.d. 1.200 c/s dan kadar uranium 0,54 s.d. 36 ppm. Mineral radioaktif yang terdapat pada batuan granitik terdiri dari zirkon, monasit, alanit, thorit dan branerit. Cebakan mineral radioaktif yang berpotensi terbentuk di Pulau Sulawesi adalah cebakan thorium tipe placer pada delta dan pantai yang ada saat ini.

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Pusat Teknologi Bahan Galian Nuklir – Badan Tenaga Nuklir Nasional

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Diterbitkan
2021-11-16
Bagian
Buletin Sumber Daya Geologi