In the past few years, largely because of increased freight rates, a keen interest in finding sources of high-silica sand has developed. The Geological Survey has received many inquiries about possible sources of high-silica sand in the state. Although published information on the geology of the formations that may contain high-silica sand has been available, economic information, such as quality, distribution, extent, and accessibility, has not been available.
Murray, H. H., and Patton, J. B., 1953, Preliminary report on high-silica sand in Indiana: Indiana Geological Survey Report of Progress 5, 35 p., 3 figs., 1 pl.
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