<![CDATA[This research is about synthesis and characterization of pyrite, from minerals deposite of Bontocani subdistrict, Bone regency, South Sulawesi. The sample of minerals was characterized by using X-Ray Diffraction (XRD) to determine the crystal structure and chemical composition of the minerals. Based on the results of XRD characterization, we found that the composition MB_06 of Pyrite (FeS2) 64 wt.%, Hematite iron (III) oxide (Fe2O3) 15 wt.%, Silicon Okside (SiO2) 14 wt.% dan Magnetite (Fe3O4) 4 wt.%.. And the composition MB_13 of Pyrite 9.8 wt.%, Hematite (Fe2O3) 4 wt.%, Molybdenum (Mo) 8 wt.%, dan Silicon Oxide (SiO2) 78 wt.%. This purification of pyrite had done by dissolve 4 gram of pyrite minerals with 20 ml of HCl solution 12 M then heated at certain temperature 300 0C for 2,5 h. Based on the results of XRD characterization, we found that the composition of pyrite are 85 wt% on MB_06 and 83 wt% on MB_13. SEM characterization was used to know the accidence of the minerals. The results of SEM analysis show that the minerals have a plate form with size of grains are ± 2 m.Penelitian ini mengenai sintesis dan karakterisasi Pyrite (FeS2), dari deposit mineral Kecamatan Bontocani Kabupaten Bone, Sulawesi Selatan. Karakterisasi dilakukan melalui uji X-Ray Diffraction (XRD) untuk mengetahui stuktur kristal dan komposisi kimia mineral. Berdasarkan hasil karakterisasi XRD diperoleh informasi bahwa mineral MB_06 mengandung Pyrite (FeS2) 64 wt.%, Hematite iron (III) oxide (Fe2O3) 15 wt.%, Silicon Okside (SiO2) 14 wt.% dan Magnetite (Fe3O4) 4 wt.%. Untuk MB_13 mengandung Pyrite 9.8 wt.%, Hematite (Fe2O3) 4 wt.%, Molybdenum (Mo) 8 wt.%, dan Silicon Oxide (SiO2) 78 wt.%. Pemurnian pyrite dilakukan dengan melarutkan serbuk mineral 4 gram dengan larutan HCl 12 M sebanyak 20 ml ke dalam gelas kimia dan dipanaskan pada temperatur 300⁰C selama 2,5 jam dengan oven. Berdasarkan hasil karakterisasi XRD kuantitas fase (wt.%) mineral pyrite sebesar 85 wt.% untuk MB_06 dan 83 wt.% untuk MB_13. Morfologi mineral pyrite dianalisis menggunakan Scanning Electron Microscopy-Energy Dispersive X-Ray Spectroscopy (SEM-EDS). Citra SEM menunjukkan bahwa morfologi pyrite berbentuk lempengan dengan ukuran ±2 µm.Kata Kunci: deposit mineral, FeS2 (pyrite), purifikasi, komposisi mineral ]]>
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