This sample is a heavy-mineral sand, rich in high-density mineral grains. The dark red grains are garnets (likely almandine garnets), and some appear faceted—remnants of their original, 12-sided dodecahedron crystal shape. The black grains are iron minerals: magnetite and hematite. Some of the clear grains are quartz; amber-colored grains are smoky quartz. Other small clear grains are zircons; these fluoresce yellow-orange under UV light.