Beaches in Hawaii can be composed of white, yellow, black, red or even green sand, as well as pebbles and rocks. Minerals include: Biogenic Sand, Magnetite, Olivine, Basalt Fragments, Pyroclastics, Chlorite and Apatite
Hilton head sand is tan and white. Minerals include: 15% feldspar, 15% percent rock fragments, 5% clay minerals and smaller proportions of calcium carbonate