Phase Decomposition upon Alteration of Radiation-Damaged Monazite-(Ce) from Moss, Ostfold, Norway
The internal textures of crystals of moderately radiation-damaged monazite-(Ce) from Moss, Norway, indicate heavy, secondary chemical alteration. In fact, the cm-sized specimens are no longer mono-mineral monazite but rather a composite consisting of monazite-(Ce) and apatite pervaded by several gen...
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| Format: | Journal Article |
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Schweizerische Chemische Gedellschaft (Swiss Chemistry Society)
2010
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| Online Access: | http://hdl.handle.net/20.500.11937/17162 |
| _version_ | 1848749386733977600 |
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| author | Nasdala, L. Ruschel, K. Rhede, D. Wirth, R. Kerschhofer-Wallner, L. Kennedy, Allen Kinny, Peter Finger, F. Groschopf, N. |
| author_facet | Nasdala, L. Ruschel, K. Rhede, D. Wirth, R. Kerschhofer-Wallner, L. Kennedy, Allen Kinny, Peter Finger, F. Groschopf, N. |
| author_sort | Nasdala, L. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The internal textures of crystals of moderately radiation-damaged monazite-(Ce) from Moss, Norway, indicate heavy, secondary chemical alteration. In fact, the cm-sized specimens are no longer mono-mineral monazite but rather a composite consisting of monazite-(Ce) and apatite pervaded by several generations of fractures filled with sulphides and a phase rich in Th, Y, and Si. This composite is virtually a 'pseudomorph' after primary euhedral monazite crystals whose faces are still well preserved. The chemical alteration has resulted in major reworking and decomposition of the primary crystals, with potentially uncontrolled elemental changes, including extensive release of Th from the primary monazite and local redeposition of radionuclides in fracture fillings. This seems to question the general alteration-resistance of orthophosphate phases in a low-temperature, 'wet' environment, and hence their suitability as potential host ceramics for the long-term immobilisation of radioactive waste. |
| first_indexed | 2025-11-14T07:20:07Z |
| format | Journal Article |
| id | curtin-20.500.11937-17162 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:20:07Z |
| publishDate | 2010 |
| publisher | Schweizerische Chemische Gedellschaft (Swiss Chemistry Society) |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-171622019-02-19T05:34:59Z Phase Decomposition upon Alteration of Radiation-Damaged Monazite-(Ce) from Moss, Ostfold, Norway Nasdala, L. Ruschel, K. Rhede, D. Wirth, R. Kerschhofer-Wallner, L. Kennedy, Allen Kinny, Peter Finger, F. Groschopf, N. Chemical alteration · Monazite–(Ce) · Radiation damage · Thorium silicate The internal textures of crystals of moderately radiation-damaged monazite-(Ce) from Moss, Norway, indicate heavy, secondary chemical alteration. In fact, the cm-sized specimens are no longer mono-mineral monazite but rather a composite consisting of monazite-(Ce) and apatite pervaded by several generations of fractures filled with sulphides and a phase rich in Th, Y, and Si. This composite is virtually a 'pseudomorph' after primary euhedral monazite crystals whose faces are still well preserved. The chemical alteration has resulted in major reworking and decomposition of the primary crystals, with potentially uncontrolled elemental changes, including extensive release of Th from the primary monazite and local redeposition of radionuclides in fracture fillings. This seems to question the general alteration-resistance of orthophosphate phases in a low-temperature, 'wet' environment, and hence their suitability as potential host ceramics for the long-term immobilisation of radioactive waste. 2010 Journal Article http://hdl.handle.net/20.500.11937/17162 10.2533/chimia.2010.705 Schweizerische Chemische Gedellschaft (Swiss Chemistry Society) fulltext |
| spellingShingle | Chemical alteration · Monazite–(Ce) · Radiation damage · Thorium silicate Nasdala, L. Ruschel, K. Rhede, D. Wirth, R. Kerschhofer-Wallner, L. Kennedy, Allen Kinny, Peter Finger, F. Groschopf, N. Phase Decomposition upon Alteration of Radiation-Damaged Monazite-(Ce) from Moss, Ostfold, Norway |
| title | Phase Decomposition upon Alteration of Radiation-Damaged Monazite-(Ce) from Moss, Ostfold, Norway |
| title_full | Phase Decomposition upon Alteration of Radiation-Damaged Monazite-(Ce) from Moss, Ostfold, Norway |
| title_fullStr | Phase Decomposition upon Alteration of Radiation-Damaged Monazite-(Ce) from Moss, Ostfold, Norway |
| title_full_unstemmed | Phase Decomposition upon Alteration of Radiation-Damaged Monazite-(Ce) from Moss, Ostfold, Norway |
| title_short | Phase Decomposition upon Alteration of Radiation-Damaged Monazite-(Ce) from Moss, Ostfold, Norway |
| title_sort | phase decomposition upon alteration of radiation-damaged monazite-(ce) from moss, ostfold, norway |
| topic | Chemical alteration · Monazite–(Ce) · Radiation damage · Thorium silicate |
| url | http://hdl.handle.net/20.500.11937/17162 |