Minerals
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…
mining
Mining is the excavation of valuable material from the earth. Researching and mapping of abandoned mines of the state is a primary role for the CGS.
Geology
May 10, 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…
Geology
April 11, 2022
Case Study: Lykins Formation
Small but significant areas of Colorado are underlain by bedrock that is composed of evaporative…
Geology
March 15, 2022
Recent reports published
OF-20-11 Alkaline Complexes of the Wet Mountains Area, Colorado: A Geological Summary, Bibliography, and Data Compilation…
Minerals
February 3, 2022
IS-84 Colorado Mineral and Energy Industry Activities 2020-2021 – bibliography
Every year, the CGS Minerals section prepares a comprehensive survey of the mineral and energy industries across the state. The…
Geology
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…
Energy
February 18, 2020
Colorado’s Uranium Deposits
[Ed: this document, written in 2011 by Jim Burnell, Ph.D., P.G. (former Senior Minerals Geologist, Colorado Geological Survey), provides an…
Geology
October 16, 2019
Creede: The Last Boom Town
This RMPBS/Colorado Experience video explores the vibrant mining history of Creede, Colorado.
Energy
August 14, 2018
Geology of Uranium Deposits in Colorado
Uranium is a widespread and ubiquitous element. It has a crustal abundance of 2.8 parts per million, slightly more than…
Publications
February 17, 2017
IS-79 Colorado Mineral and Energy Industry Activities 2015-16
The current annual Colorado Mineral and Energy Industry Activities report 2015-16 is now available. Following up on the…
Hazards
June 15, 2011
Mine Subsidence Hazards in Colorado
This video, produced by the CGS in 2011, examines the significant geo-hazards related to the long history of underground coal…
Hazards
April 26, 2005
Case Study: mine subsidence, CSM
For decades, the west side of the Colorado School of Mines (CSM) main campus had subsidence issues related to…
General
March 11, 1909
Mines and Minerals: the early Survey
While a number of brilliant men have in past years held the office of Colorado State Geologist, it is no…