Determination of Magnetic Mineral Crystal Structure Using X-Ray Diffraction (XRD) on Igneous Rock from Ogolowe and Bajugan Village, Toli toli District Central Sulawesi

Abstract

Study of igneous rocks derived from Ogowele Village and Village Toli-Toli Bajugan has been conducted to determine the magnetic minerals contained in the igneous rocks, as well as determine the crystal system, lattice constants and field diffraction by comparison sieve 60 mesh and 80 mesh. Process characterization and analysis using X-Ray Diffraction (XRD). Characterization and analysis of the results showed that the compound was detected both rock samples Fe₃O₄, SiO₂, Al₂O₃ and MnO₂. Igneous rocks derived from Ogowele village is dominated by compounds SiO2 (quartz) by 52% and rocks from Bajugan village dominated by the compound Fe₃O₄ (magnetite) by 40%. The crystal structure is cubic and hexagonal compound to compound Fe₃O₄ SiO₂. Fe₃O₄compound cubic lattice constants are a = b = c is 8.375 Å. To compound the hexagonal SiO2 ie a = b of 4.898 Å and c of 5.385 Å. Field diffraction on Fe₃O₄compound is (3 1 1) and the SiO2 compound that is (1 0 1).

Keywords: X-Ray Diffraction, Fe₃O₄ Compound, SiO₂ Compound, cubic, hexagonal