Comparative Study of Landsat 8 Multispectral Analysis and Mineralogical Characterization of Iron Sands from the Coast of Kulon Progo, Yogyakarta
Setia Pambudi, Sutarto, Maulana Yudinugroho, Frideni Yushandiana Putri Green Field, Abdullah Khafid Maruf, Naufal Aditya Putra, Maulidiya Fathien Hamidah

Geological Engineering Department, Universitas Pembangunan Nasional Veteran Yogyakarta

Abstract

This study presents a comparative analysis between multispectral analysis using Landsat 8 data and mineralogical analysis of iron sands from the coast of Kulon Progo, Yogyakarta. The multispectral analysis distinguished three different iron minerals: ferric oxide, ferrous oxide, and hydroxyl minerals. Eight iron sand samples were analyzed using Landsat 8 data, combining band index and density slicing to effectively identify iron oxide mineral characteristics. The mineralogical analysis was conducted through grain counting using a binocular microscope. The results show that samples from areas with ferrous iron are dominated by magnetite. In contrast, samples from ferric iron areas are dominated by a combination of magnetite and hematite, with these areas typically kept moist due to sea currents. The hydroxyl mineral areas are characterized by the presence of magnetite, hematite, and some hydroxyl minerals such as goethite and clay minerals. This study highlights the effectiveness of combining multispectral and mineralogical analyses for detailed characterization of iron sands. The findings provide valuable insights into the distribution and composition of iron minerals in coastal regions, which can be crucial for environmental and geological studies. The use of Landsat 8 data and binocular microscope analysis demonstrates a robust method for identifying and quantifying different iron minerals in complex geological settings.

Keywords: Landsat 8, Multispectral Analysis, Mineralogy, Iron Sands, Ferric Oxide, Ferrous Oxide, Hydroxyl Minerals

Topic: Engineering