X-Ray Diffraction (XRD) Analysis of Local Rock Minerals from the Geological Zones of Dembek and Wariab Villages, West Papua

This study aims to characterize the minerals in rock samples from Dembek and Wariab Villages, South Manokwari Regency, West Papua, using the X-ray Diffraction (XRD) method. XRD was used to identify crystalline phases and mineral compositions in the rocks, as well as to understand the geological conditions and mineral resource potential in the area. Rock samples were systematically collected from both locations and analyzed using an X-ray diffractometer. The analysis results show that the rocks from Dembek Village are dominated by quartz (SiO 2 ), Sodium Aluminum Silicate (Na 1.45 Al 1.45 Si 0.55 O 4 ), Potassium Aluminum Silicate (KAlSi 2 O 6 and KAlSiO 4 ), Potassium Silicon Fluoride (K 2 SiF 6 ), Albite (Na (Si 3 Al)O 8 ), Magnesium (Mg), Sodium Magnesium Aluminum Silicate (Na 3 MgAlSi 2 O 8 ), and Potassium Magnesium Silicate (K 2 MgSi 5 O 12 ). The rocks from Wariab Village contain a more varied range of minerals from two sampling points, namely, at the WRB-L1 location, consisting of halite (NaCl), quartz (SiO 2 ), Potassium Magnesium Fluoride (KMgF 3 ), Potassium Magnesium Silicate (K 2 MgSi 5 O 12 ), anorthite (CaAl 2 Si 2 O 8 ), and Potassium Aluminum Silicate (KAlSi 2 O 6 ). The WRB-L2 location consisted of fluorite (CaF 2 ), Potassium Silicon Fluoride (K 2 S1F 6 ), sylvite (KCl), sodalite (Na 4 Al 3 Si 3 O 12 Cl), and Sodium Aluminum Silicate (Na 1.65 Al 1.65 Si 0.35 O 4 ). These differences in mineral composition reflect variations in the formation environment and geochemical processes that occur at each location.