Heavy minerals are significant in the analysis of depositional environment and to identify source of grains. This paper aim to provide the distribution and origin of the heavy mineral concentrated in the cassiterite bearing sediments of the alluvial tin fields of the Ropp complex. A total of 10 selected mineral concentrate samples were dried and separated from other light minerals using bromoform. Mineral identification was done using binocular microscope. The heavy mineral samples obtained were analyzed for qualitative mineral examination in order to identify mineral compositions for each locality and their percentage. The mineral assemblages documented in the samples include: Ilmenite (3% to 27%). Cassiterite (2 to 14%), Zircon (2 to 16%), magnetite (0 to 17%), tourmaline (5 to 11%), rutile (2 to 8%) and monazite (2 to 7%). The ZTR Index calculated from the result of heavy minerals analysis for the selected samples is 59%. All samples collected contained cassiterite grains in various amounts. From the mineral assemblage, the source of cassiterite originates from the mineralized quartz veins that cut granitic rocks as well as the metasedimentary rocks in the area. The presence of monazite which is always in association with cassiterite also confirms that the cassiterite bearing sediments are of granitic origin. The study shows that the samples are mineralogically immature and most of the heavy minerals have been derived mainly from igneous rocks and little part from low to medium grade metamorphic rocks of the Ropp complex.