Uranium deposits in granitic rocks
This report is a review of published data bearing on the geology and origin of uranium deposits in granitic, pegmatitic and migmatitic rocks with the aim of assisting in the development of predictive criteria for the search for similar deposits in the U.S. Efforts were concentrated on the so-called ''porphyry'' uranium deposits. Two types of uranium deposits are primarily considered: deposits in pegmatites and alaskites in gneiss terrains, and disseminations of uranium in high-level granites. In Chapter 1 of this report, the general data on the distribution of uranium in igneous and metamorphic rocks are reviewed. Chapter 2 contains some comments on the classification of uranium deposits associated with igneous rocks and a summary of the main features of the geology of uranium deposits in granites. General concepts of the behavior of uranium in granites during crustal evolution are reviewed in Chapter 3. Also included is a discussion of the relationship of uranium mineralization in granites to the general evolution of mobile belts, plus the influence of magmatic and post-magmatic processes on the distribution of uranium in igneous rocks and related ore deposits. Chapter 4 relates the results of experimental studies on the crystallization of granites to some of the geologic features of uranium deposits in pegmatites and alaskites in high-grade metamorphic terrains. Potential or favorable areas for igneous uranium deposits in the U.S.A. are delineated in Chapter 5. Data on the geology of specific uranium deposits in granitic rocks are contained in Appendix 1. A compilation of igneous rock formations containing greater than 10 ppM uranium is included in Appendix 2. Appendix 3 is a report on the results of a visit to the Roessing area. Appendix 4 is a report on a field excursion to eastern Canada.
- Research Organization:
- North Carolina Univ., Chapel Hill (USA)
- DOE Contract Number:
- EY-76-C-13-1661
- OSTI ID:
- 7315822
- Report Number(s):
- GJBX-13(77); TRN: 77-007148
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
GRANITES
URANIUM DEPOSITS
GEOLOGY
ORIGIN
CRYSTALLIZATION
EXPLORATION
IGNEOUS ROCKS
METAMORPHIC ROCKS
MINERALIZATION
PEGMATITES
REVIEWS
USA
DOCUMENT TYPES
GEOLOGIC DEPOSITS
NORTH AMERICA
PHASE TRANSFORMATIONS
RESOURCES
ROCKS
050200* - Nuclear Fuels- Exploration- (-1987)