: dark-colored 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
Cheryl Simon, Science News, 9 July 1983
specifically
: dark sand containing small fragments of magnetite usually found as part of a geological deposit
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
Alan M. Cvancara, A Field Guide for the Amateur Geologist, 1995 Note: Deposits of black sand are often signs of valuable resources such as gold, rare earth elements, or gems.
: of or relating to a component of Woodland culture and a physical type first found in central Illinois
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“Black sand.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/black%20sand. Accessed 30 Nov. 2024.
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