Mineral contents characterization of limestone of Jayapura-Papua

Abstract

The research about the characterization of limestone mineral content from Jayapura using XRF, XRD, and SEM-EDS had been done. The purpose of the research is to find the mineral content, determine the phase and determine the morphology of particles in limestone. From the results of XRF testing there is one main element that has the most chemical elements in the sample of limestone origin of Jayapura at Tanah Hitam i.e. Ca (calcium) with weight percentage of 99.57 and then followed by Sr (Strontium), Cu (copper), Fe (Iron) and Mo (Molibden). The phase identification in FIG. 1 is 100% Dolomite (CaMg (CO3)2) according to ref. Code 01-075-1655, the XRD pattern shows the highest diffraction peak at a 2? angle is 30.9700 corresponding to the fraction (h k l): (1 0 4). XRD results are also supported from characterization with EDS where the dominant element of the sample is O, Ca and Mg. Then based on SEM Analysis, the morphology of Ca (CO3) resembles a cube but its particle size is uneven and irregular due to impurity factor.