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

Industrial Minerals


Much of the CGS website is under heavy re-construction and will be for some time. The Publications area is working normally, but there is a lot of content from our original site that was in desperate need of updating. Please bear with us as we gather new information and rewrite hundreds of pages of material, gather and properly caption high-resolution images and otherwise bring you some very cool new and archival material never before seen! Stay in touch by subscribing to the >RockTalk< blog where we will announce new items periodically.


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.