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Large 700-series Caterpillar mine hauling trucks at the Holcim Portland Cement plant in Florence

Energy, General, Minerals, Publications

April 13, 2023

IS-85 Colorado Mineral and Energy Industry Activities 2021-2022

The current annual Colorado Mineral and Energy Industry Activities report for 2021-22 is now available. Following up on the 2020-21 report, this report is based on 2021 production data with additional reported news from 2022. It provides a comprehensive snapshot of Colorado’s mineral resource…

North Table Mountain stands between Golden and the wider Denver metro area in the background. Photo credit: Vince Matthews for the CGS.

Geology, Publications

May 11, 2022

Golden Rocks: The Geology and Mining History of Golden, Colorado

We’ve received the go ahead to help distribute this marvelous (and FREE!) 100+ page digital publication from the talented and insightful Donna Anderson and Paul Haseman. Their passion for geology and for communicating the fascinating and often surprising facts about Golden and its geologic history show through every page…

Mining town

Geology, Minerals, Publications

November 24, 2020

Re-introducing: Historic Metal Mining Districts

As the reconstruction of our website continues, we recently redeployed a popular package of information that was compiled and made available by former CGS Senior Minerals Geologist, Mr. James Burnell, during the 2010s. Referencing a variety of sources, Burnell researched most of the major districts around the state. Each district…