Martin Marietta Aggregates in Jefferson County, Colorado, March 2013. Photo credit: Michael O'Keeffe for the CGS.

Industrial Minerals

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Historically, Colorado has had industrial mineral development with a surprising variety of materials including: gypsum, aggregates, silica, clay, limestone, cement, crushed stone, nahcolite (sodium carbonate), vermiculite, industrial gasses (helium, CO2), dimension & decorative stone, and silica (frac sand) among others.