Geologic controls of uranium mineralization in the Tallahassee Creek uranium district, Fremont County, Colorado.
Mountain Geologist
By: K. A. Dickinson
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Abstract
Two important orebodies have been defined by drilling in the Tallahassee Creek uranium district, Fremont County, Colorado, namely the Hansen and the Picnic Tree. Host rocks are respectively the upper Eocene Echo park Alluvium, and the lower Oligocene Tallahassee Creek Conglomerate. Average ore grade is about 0.08% U3O8. The principal source rock is the lower Oligocene Wall Mountain Tuff. Leaching and transportation of the uranium occurred in alkaline oxidizing ground water that developed during alteration of the ash in a semi-arid environment. The uranium was transported in the groundwater and deposited in a reducing environment controlled by carbonaceous material and associated pyrite. Localization of the ore was controlled by groundwater flow conditions and by the distribution of organic matter in the host rock. -from Author
Suggested Citation
Dickinson, K.A., 1981, Geologic controls of uranium mineralization in the Tallahassee Creek uranium district, Fremont County, Colorado.: Mountain Geologist, v. 18, no. 4, p. 88-95.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Geologic controls of uranium mineralization in the Tallahassee Creek uranium district, Fremont County, Colorado. |
| Series title | Mountain Geologist |
| Volume | 18 |
| Issue | 4 |
| Year Published | 1981 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Mountain Geologist |
| First page | 88 |
| Last page | 95 |