SINTESIS DAN KARAKTERISASI PYRITE (FeS2) DARI DEPOSIT MINERAL KECAMATAN BONTOCANI, KABUPATEN BONE, SULAWESI

Abdul Haris(1*), Bunga Dara Amin(2), A. Momang(3), Nurhasmi Nurhasmi(4),

(1) Jurusan Fisika FMIPA UNM
(2) Jurusan Fisika FMIPA UNM
(3) Jurusan Fisika FMIPA UNM
(4) Jurusan Fisika FMIPA UNM
(*) Corresponding Author




DOI: https://doi.org/10.35580/jspf.v10i3.963

Abstract


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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References


Asieh , Akhoondi, and Aghaziarati Mahmoud. "produksi of highly pure iron disulfide nanoparticles using hydrotermal syinhtesis method." Appl Nanosci, 2013: 417-422.

D, Zhang, Tu J.P, Mai Y.J, Zhang J, Qiau Y.Q, and Wang X.L. "Preparation and characterization of FeS2/polyaniline composite electrode in lithium-ion battery." Australian Ceramic Society, 2012: 189

Mohammadkhani, S., and M. Aghaziarati. "Production of Iron Disulfide Nanoparticles by Hydrothermal Process." Int. J. Nanosci. Nanotechnol, 2010: 231-235

Yanhua, CHEN, ZHENG Yufeng, ZHANG Youzhong. "Solvothermal synthesis of nanocrystalline FeS2." Science in China Ser. G Physics, Mechanics & Astronomy, 2005: 188-200.

Buku:

Casper, Julie Kerr. Minerals Gifts From the Earth. New York: Library of Congress Cataloging, 2007. Prosiding seminar:

Soyaga Heru, Prayitno, Mardisewodjo Purwanto, and M. Atmojo Supomo. "Pengaruh Mineral Pirit Terhadap Resistivitas Batupasir." Proceeding Simposium Nasional Iatmi, 2001.


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