Grain size distribution and heavy minerals in the sediments of Sungai Dungun, Terengganu

Twenty-one samples of sediments were collected from the center of the river channel and 13 sediment samples collected from the riverbank were analysed for their textural parameters (mean, standard deviation, skewness, and kurtosis) to determine the mineral size. The results indicate that sediments from both the center of the channel and the riverbank were dominated by very coarse sand and very fine gravel. Heavy minerals in the sediment were separated using bromoform for density separation, as well as magnetic separation. Ilmenite, magnetite and cassiterite were abundant in the middle of the channel whereas rutile and zircon were found to be dominant at the riverbank.