Uranocircite: luminescence and crystal structure
A study on the determination of the complex structure of the electron-vibration spectra and the elucidation of their relation to crystallochemical factors in uranocircite is presented. The work was performed on samples from zones of a single crystal of the same natural meta-uranocircite, differing in color, and also on other specimens from various Soviet and foreign deposits. Of the 15 meta-uranocircite specimens investigated, in 14 cases the luminescence spectra were homoypic and were a series of equidistant groups of lines of the fine structure; the spectral position of which was practically constant for all the specimens. The degree of hydration was found to have practically no influence on the luminescence of the meta-uranocircite. The investigation supports the supposition that there are marked differences in the structures of minerals of the uran-mica group, although in the authors' opinion, the mechanism itself of multi-center radiation is universal and manifested for all secondary uranium minerals. (JMT)
- OSTI ID:
- 6430172
- Journal Information:
- Int. Geol. Rev.; (United States), Vol. 23:1
- Country of Publication:
- United States
- Language:
- English
Similar Records
Spectroscopic properties and the structure of the immediate environment of rare earth ions in crystallochemical series of rare earth oxymolybdates and oxytungstates of the type Ln/sub 2/MO/sub 6/. [Ln = La to Lu; Eu/sup 3 +/ luminescence centers]
Luminescence and energy migration in Ba/sub 2/CaUO/sub 6/
Related Subjects
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
URANOCIRCITE
CRYSTAL STRUCTURE
LUMINESCENCE
CHEMICAL COMPOSITION
CRYSTAL LATTICES
CRYSTALLOGRAPHY
MINERALOGY
ACTINIDE COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM SULFATES
MATERIALS
MINERALS
OXYGEN COMPOUNDS
PHOSPHATES
PHOSPHORUS COMPOUNDS
RADIOACTIVE MATERIALS
RADIOACTIVE MINERALS
SULFATES
SULFUR COMPOUNDS
URANIUM COMPOUNDS
URANIUM MINERALS
URANIUM PHOSPHATES
050100* - Nuclear Fuels- Reserves
Exploration
& Mining
400702 - Radiochemistry & Nuclear Chemistry- Properties of Radioactive Materials