Graphite, Ilmenite, Rutile, Zircon, Quartz, Feldspar, Clay, Kaolin, Apatite, (Phosphate Rock), Silica Sand, Garnet sand, Mica, Calcite and Dolomite. Pulmoddai beach sand deposit is the most important nonferrous mineral reserve in Sri Lanka, containing some of the most expensive and sought-after metals in the world. Ilmenite (FeTiO 2) and rutile ...