Magnetic Titanohematite Minerals in Uranium-Bearing Sandstones
Detrital grains of the rhombohedral ilmenite (FeT1O3)--hematite (Fe2O3) solid solution series (titanohematites) have been identified by thermomagnetic, reflection microscopic, and X-ray diffraction analysis in six uranium-bearing sandstones in the western United States. Many of the titanohematites are ferrimagnetic and have Curie temperatures ranging from about 70 Deg C to 220 Deg C. Magnetic titanohematite is commonly more abundant than magnetite in many samples and, therefore, should be considered as a major source of the permanent magnetization in these units.
Citation Information
Publication Year | 1977 |
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Title | Magnetic Titanohematite Minerals in Uranium-Bearing Sandstones |
DOI | 10.3133/ofr77355 |
Authors | Richard L. Reynolds |
Publication Type | Report |
Publication Subtype | USGS Numbered Series |
Series Title | Open-File Report |
Series Number | 77-355 |
Index ID | ofr77355 |
Record Source | USGS Publications Warehouse |
USGS Organization | U.S. Geological Survey |