Definition of black sand
- a black sand beach
- Along the coast the sea gnaws at the twisted lava, and eventually reduces it to “black sand.”
- —Cheryl Simon, Science News, 9 July 1983
- Slow down as black sand begins to accumulate in the bottom of the pan, and watch for any gold that might move up toward the rim of the pan.
- —Alan M. Cvancara, A Field Guide for the Amateur Geologist, 1995