Study of mineral properties in granite rocks Ujung Karang village, South Aceh

Abstract

Granite rock is a non-metallic rock, one of which is located in Ujung Karang Village, South Aceh Regency, this rock has a high commercial value, but depends on the type and color that is owned. So to find out need to do a basic study of these rocks. The purpose of this study was to obtain preliminary information on the constituent minerals and dominant colors that appeared in the granite rocks of Ujung Karang Village. This research method uses X-ray fluorescence (XRF) and Scanning Electron Microscopy (SEM) techniques. The test results showed that 17 dominant mineral phases were identified, while others were minor phases. The largest mineral phase is in the SiO2 compound at 63.6%, while the smallest mineral phase is in the ZnO compound at 0.01%. While the surface morphological observations obtained 46.49wt% O elemental bases, then 28.60wt% Si elemental bases, and 09.57wt% basic element Al, besides these elements, there are also other elements namely 05.65wt% O basic elements, 04.68wt% Na basic elements %, the element Fe is as broad as 03.72wt%, and Mg is as basic as 01.71wt%. The surface morphology in these rock samples is irregular with varying grain sizes. Visually visible colors are dark and white, and it can be assumed that the elements contained in the granite are predominantly Si or Silica elements.