POTENSI MINERAL BATUAN TAMBANG BUKIT 12 DENGAN METODE XRD, XRF DAN AAS

Abstract

ABSTRACT

The mining area of Bukit 12 Mandailing Natal (Madina) was used as a gold mining public. Based on the physical properties of the rock could be estimated the potential of other minerals contents. Therefore, research is to identify the other material in rock. The methods of identify process are X-Ray Fluorescence (XRF), X-Ray Diffraction (XRD) and Atomic Absorption Spectrophotometer (AAS). The result of measurement by XRF method shows that mineral elements in rocks mining composed by 62.176% Si, 21.997% Al, 6.81% C, 4.193% Fe, 2.884% Cu, while the oxide are 66.66% SiO2, 25.240% Al2O3, 3.292% K2O, Fe2O3 2.201% and 1.257% CuO. The result of measurement by using XRD method describe that rock mining produces the highest peak to indicate SiO2 about 75%, Gold (Au) 21% and copper (Cu) 4%. Furthermore, AAS method shows the mineral elements / compounds contained in the rock are 1.77% Fe, 1.16% Cu, 90.43% SiO2% and 2:05.% Al2O3. The results of three methods identify that rock mining in Bukit 12 contain dominant minerals namely silicon oxide (SiO2), Cu, Fe and Al (Al2O3).

Keywords: Batuan tambang, X-ray Flouresence(XRF), X-ray Diffraction (XRD), Atomic Absorption Spectrofotometer(AAS).