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Exploration for Heavy Minerals in Ancient Strand Line Sands of Mississippi: The Meridian Sand.
For Reference Only At Bureau Libraries :28 pages
Minerals with specific gravities of 2.9 Or greater are collectively referred to as "heavy minerals." These minerals have settling characteristics that allow the smaller dense particles to be hydrodynamically equivalent to larger particles of quartz. This produces placer deposits that consist of thin lenses of heavy mineral concentrates within a quartz sand. Heavy mineral placers are most commonly found in fluvial point bar, beach shoreface and foreshore, or washover deposits. Numerous investigations have been carried out in an effort to locate and evaluate heavy mineral placers within the gulf-front beach and washover delta deposits of the offshore Mississippi barrier system. Many workers have concluded that the amounts of ilmenite, leucoxene, zircon, and rutile found in these deposits may be of economic significance. At present, however, this is of little consequence because of the federalization of the offshore Mississippi barrier system as a national seashore. The purpose of this study was to find and evaluate the heavy mineral population of an ancient barrier island system similar to the modern system. The most suitable ancient analog of the modern system appeared to be the meridian sand along the outcrop exposed through Neshoba, Newton, Lauderdale, and Clarke Counties, Mississippi. In fact, it has been suggested that the Meridian sand is a large continuous neritic bar deposit.
CP; Final Contract Report;
For Reference Only At Bureau Libraries
University of Mississippi
Page last reviewed: April 12, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division