Abstract
The analysis of the magnetic material abundance on the black sand of Nyanyi beach revealed magnetic material content, grain size, density, magnetic mineral content, and magnetic susceptibility value.The results of this study can be used for black sand development inTabanan district. The black sand magnetic material was determined by the extraction method. Mineral content was tested by using XRF equipment, and the magnetic properties of black sand were determined by using a Bartingtons MS2 Magnetic Susceptibility Meter and a Vibrating Sample Magnetometer. The data were analyzed descriptively quantitatively. The results show thatNyanyi beach sand physically has a characteristic dark gray color, tends to be black, and shiny with a weight fraction of magnetic material reaching 95.52%.The density of the magnetic material is 2072.6 with varying grain sizes of 53 600 .The average value of magnetic susceptibility is 27.212x 10-with Fe2O3magnetic mineral content of 86.68% and the element of Fe is 89.41%.The values of saturation magnetization, remanance magnetization, and coervicity reach37.74; 4.64; 103.93 Oe.
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