The new maps are from the Durango area in La Plata County, the Glenwood Springs-Carbondale area in Garfield and Pitkin Counties, and in the Southern Mosquito Range of Park and Fremont Counties. The CGS has two distinct mapping programs. Severance taxes are derived from the production of oil, gas, coal, and minerals. This is the third published map in the southern Mosquito Range, which contains occurrences of gold, copper, tungsten, dimension stone, and sand and gravel.
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