HUBUNGAN TEKSTUR DAN MINERALOGI PASIR BESI TERHADAP DISTRIBUSI UNSUR BESI, TITANIUM, DAN VANADIUM DI PANTAI SELATAN TASIKMALAYA: RELATIONSHIP BETWEEN THE TEXTURE AND MINERALOGY OF IRON SAND AND THE DISTRIBUTION OF IRON, TITANIUM, AND VANADIUM IN THE SOUTHERN COAST OF TASIKMALAYA

Suwahyadi; Sutarto; Ernowo

doi:10.47599/bsdg.v21i2.580

Authors

Suwahyadi Pusat Sumber Daya Mineral Batubara dan Panas Bumi, Indonesia Author
Sutarto UPN Veteran Yogyakarta, Indonesia Author
Ernowo Badan Riset dan Inovasi Nasional, Indonesia Author

DOI:

https://doi.org/10.47599/bsdg.v21i2.580

Keywords:

Iron Sand, MIneralogy, Texture, Fe, Ti, V, Tasikmalaya

Abstract

Iron sand deposits along the southern coast of Tasikmalaya Regency constitute a strategic mineral resource containing iron (Fe), titanium (Ti), and vanadium (V). This study aims to analyze the relationship between the texture and mineralogy of iron sand and the distribution of Fe, Ti, and V in beach placer deposits at Ciheras 1, Ciheras 2, and Cikalong blocks. The research methods include manual drilling, measurements of specific gravity and magnetic susceptibility, mineragraphic analysis, X-Ray Fluorescence (XRF), and Electron Probe Micro Analyzer (EPMA) to characterize mineral phases and elemental distribution at the microscale. The results indicate that the iron sand is predominantly composed of magnetite, ilmenite, hematite, and titanomagnetite, exhibiting massive, exsolution, and myrmekitic textures. The deposit thickness ranges from 1 to 4 meters with an estimated inferred resource of approximately ±1.26 million tons. Geochemical analysis reveals a very strong positive correlation between Fe and V (r = 0.99), indicating a close association of vanadium with Fe–Ti oxide phases, particularly magnetite and ilmenite. In contrast, the correlation between Ti and V is positive but relatively weak, suggesting that part of Ti is not associated with V. Magnetic concentration processes are capable of increasing V grades by 3.5–4 times. This study confirms that the exsolution texture and mineralogy of iron sand play a critical role in controlling the distribution of Fe, Ti, and V and provides a scientific basis for further exploration and sustainable management of iron sand resources.

References

Alzwar, M., Akbar, N., & Bachri, S. (1992). Peta Geologi Lembar Garut dan Pameungpeuk, Jawa. Pusat Penelitian dan Pengembangan Geologi.

Dieye, M., Lichtervelde, M. Van, Ndiaye, A. A., Gueye, M., & Blancher, S. B. (2020). Mineralogical Characterization of Heavy Mineral Concentrates from Senegalese Great Cost by Using Qemscan and SEM. International Journal of Geosciences, 11(12), 800–817. https://doi.org/10.4236/ijg.2020.1112041

Elsner, H. (2010). Heavy Minerals of Economic Importance (Ilmenite and Leucoxene, Rutile, Zircon, Monazite and Xenotime, Kyanite, Sillimanite and Andalusite, Staurolite, Garnet, Chromite, Magnetite, Cassiterite, Columbite-Tantalite, Wolframite and Scheelite). Federal Institute for Geosciences and Natural Resources (BGR).

Fitri, S., Zulhan, Z., & Santoso, I. (2022). Produksi Besi Dan Terak Titanium Kadar Tinggi dari Konsentrat Pasir Besi atau Titanomagnetit: Ulasan Literatur [Production Of Iron And High Purity Titanium Slag From Iron Sand or Titanomagnetite Concentrate: Literature Review]. Metalurgi, 36(3), 119. https://doi.org/10.14203/metalurgi.v36i3.580

Harahap, L. M. L., Idrus, A., Ernowo, Sukadana, I. G., Suwahyadi, & Handayani, T. (2023). Mineralogical Distribution and Characteristics of Fe-, Ti-, and V-Bearing Beach Ironsand Deposit in Adikarto Bay Kulonprogo, Yogyakarta, Indonesia. IOP Conference Series: Earth and Environmental Science, 1233(1). https://doi.org/10.1088/1755-1315/1233/1/012022

Ishlah, T., Raja Parningotan, M., Sani Nugraha, R., Handayani, T., & Zahra, H. (2024). Mineralogy and Provenance of Titanium-Vanadium Bearing Iron Sand Deposits from Purworejo-Kebumen, and Cilacap, Central Java. J. Math. Fund. Sci, 56(1), 48–67. https://doi.org/10.5614/j.math.fund.sci.2024.56.1.4math

Kasper-Zubillaga, J. J., López, C. L., & Muñoz, C. A. E. de la F. (2016). Provenance of opaque minerals in coastal sands, western Gulf of Mexico, Mexico. Boletin de La Sociedad Geologica Mexicana, 68(2), 323–338. https://doi.org/10.18268/BSGM2016V68N2A10

Ramdohr, P. (1969). The Ore Minerals and Their Intergrowths (T. organized by Prof. Dr. Christian H. R. Amstutz, Tran.; 3rd English ed.). Pergamon Press.

Supriatna, S., Sarmili, L., Sudana, D., & Koswara, A. (1992). Peta Geologi Lembar Karangnunggal, Jawa. Pusat Penelitian dan Pengembangan Geologi.

Suwahyadi, Ernowo, Islah, T., S, D. N., Suparmin, A., & Krama, W. (2021). Laporan Prospeksi Pasir Besi Kabupaten Tasikmalaya, Provinsi Jawa Barat (Number 04/MN.A/BGD/2021).

Uytenbogaardt, W., & Burke, E. A. J. (1971). Tables for Microscopic Identification of Ore Minerals (2nd ed.). Elsevier Publishing Company.

Wicaksono, H. M. H., Ernowo, Handayani, T., Handayani, E., & Suwahyadi. (2020, December). Mineralogy of Beach Sands Along the Southern Beach of West Java: Implication for Provenance and Its Economic Importance. Proceedings of The 49th IAGI Annual Convention & Exhibition. https://www.researchgate.net/publication/351280189

Zahra, H., Idrus, A., Handayani, T., Ernowo, Suwahyadi, & Sunuhadi, D. N. (2023). Mineralogy and Provenance of Iron Sand Deposits from Cipatujah and Cikalong, Tasikmalaya, West Java, Indonesia. Iraqi Geological Journal, 56(2), 187–200. https://doi.org/10.46717/igj.56.2D.15ms-2023-10-21