Identifikasi Mineral Pasir Tiga Warna Pantai Puntaru Kabupaten Alor-NTT

Abstract

Puntaru beach is famous for its three-colored sand that is mixed into one of them reddish-brown, black, and white sand. Research on the mineral composition of the tricolor sand has been conducted so that the use of three-colored sand is still done traditionally. This study aims to obtain information on the silica content and other mineral compositions of the three-colored sand of Puntaru Beach as initial data for further development. The three-color sand preparation process is carried out by the method of milling / crushing sand samples then sieving and washing with H2O. Stages of characterization of silica in three-colored sand were carried out using X-ray fluorescence (XRF), X-ray powder diffraction (XRD), and Fourier-transform infrared (FTIR). The analysis showed that the percentage of Si was the most dominant 45.28%, followed by Fe 25.94% and other minor elements. XRD results show that the three-colored sand contains quartz mineral (SiO2) identified at the main peak with 2 with in the 24.34 ° area. The black color of the sand is influenced by Fe content of 25.94% with hematite metal oxide (Fe2O3) 15.80% and reddish-brown influenced by the presence of sulfur (3.25%) in the form of mineral SO3 4.32%.

Identifikasi Unsur Penyusun Sedimen Sungai Klagison Kota Sorong Papua Barat Daya Menggunakan Metode X-Ray Fluorescence (XRF)

“…Identifikasi unsur penyusun sedimen Sungai Klagison dengan menggunakan metode XRF yang menghasilkan data kualitatif dan persentase komposisi sedimen. Pada penelitian Karbeka et al, 2021 dalam mengidentifikasi pasir tiga warna di Pantai Puntaru diperoleh data kualitatif Si merupakan unsur penyusun pasir dominan sebesar 45.28%, Fe 25,94% dan beberapa unsur minor lainnya. Hasil observasi laboratorium menggunakan X-Ray Fluorescence diperoleh 19 jenis unsur penyusun sedimen Sungai Klagison yaitu unsur Al, Si, P, S, Cl, K, Ca, Ti, V, Cr, Mn, Fe, Ni, Cu, Zn, Rb, Sr, Zr dan Re.…”