Oolitic sand is an unusual sediment that is found in and around the Great Salt Lake. Instead of forming from grains of mineral fragments washed down from higher ground, this sand formed within the Great Salt Lake. It is composed of tiny, light-brown, rounded oolites.
An oolite has a shell of concentric layers of calcium carbonate that precipitated around a nucleus or central core. The nucleus is usually a tiny brine shrimp fecal pellet or a mineral fragment. Oolites form in shallow, wave-agitated water, rolling along the lake bottom and gradually accumulating more and more layers.
Although oolitic sand is collected for its uniqueness, it has also been used to dry flowers and as flux in mining operations.
Directions:
From Salt Lake City, head west on I-80 for approximately 36 miles until you reach the second Grantsville exit. Exit and turn west (left) onto the road to Stansbury Island (do not turn south to Grantsville). Travel about 6 miles on this main road until you reach an intersection with a stop sign on the west side of Stansbury Island. Turn west (left) and travel 0.5 miles to a sandy dune area adjacent to the road. Stop here and park on the edge of the road. Be careful not to get your vehicle stuck in the sand and watch out for the large trucks that use this road.
