| Reference Type | Journal (article/letter/editorial) |
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| Title | High-Temperature Crystal Chemistry of Meta-Autunite Group Minerals: Metatorbernite, Cu(UO2)2(PO4)2(H2O)8 and Metazeunerite, Cu(UO2)2(AsO4)2(H2O)8 |
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| Journal | Crystals |
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| Authors | Nazarchuk, Evgeny V. | Author |
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| Gurzhiy, Vladislav V. | Author |
| Tagirova, Yana G. | Author |
| Charkin, Dmitri O. | Author |
| Krzhizhanovskaya, Maria G. | Author |
| Kasatkin, Anatoly V. | Author |
| Eremin, Oleg V. | Author |
| Year | 2023 | Volume | < 13 > |
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| Issue | < 12 > |
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| URL | |
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| DOI | doi:10.3390/cryst13121688Search in ResearchGate |
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| Classification | Not set | LoC | Not set |
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| Mindat Ref. ID | 17009984 | Long-form Identifier | mindat:1:5:17009984:6 |
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| GUID | 0cf8ec66-785a-42ae-945f-207625812799 |
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| Full Reference | Nazarchuk, Evgeny V., Gurzhiy, Vladislav V., Tagirova, Yana G., Charkin, Dmitri O., Krzhizhanovskaya, Maria G., Kasatkin, Anatoly V., Eremin, Oleg V. (2023) High-Temperature Crystal Chemistry of Meta-Autunite Group Minerals: Metatorbernite, Cu(UO2)2(PO4)2(H2O)8 and Metazeunerite, Cu(UO2)2(AsO4)2(H2O)8. Crystals, 13 (12) doi:10.3390/cryst13121688 |
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| Plain Text | Nazarchuk, Evgeny V., Gurzhiy, Vladislav V., Tagirova, Yana G., Charkin, Dmitri O., Krzhizhanovskaya, Maria G., Kasatkin, Anatoly V., Eremin, Oleg V. (2023) High-Temperature Crystal Chemistry of Meta-Autunite Group Minerals: Metatorbernite, Cu(UO2)2(PO4)2(H2O)8 and Metazeunerite, Cu(UO2)2(AsO4)2(H2O)8. Crystals, 13 (12) doi:10.3390/cryst13121688 |
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| In | Link this record to the correct parent record (if possible) |
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| Abstract/Notes | Thermal expansion of metatorbernite, Cu(UO2)2(PO4)2(H2O)8 (1), and metazeunerite, Cu(UO2)2(AsO4)2(H2O)8 (2), has been investigated using single-crystal and powder X-ray diffraction. Both minerals are prone to dehydration, which proceeds already at ambient conditions. According to the single-crystal XRD data, 1 is stable up to 300(50) K, while 2 is stable up to 250(50) K. Powder XRD studies at various temperatures suggest that 1 dehydrates in three stages at ca. 353, 373, and 483 K, while 2 in two stages at ca. 283 and 543 K. Calculation of the main coefficients of thermal expansion reveals strong anisotropy. The expansion is maximal in the direction normal to the autunite-type layers. This correlates with the anisotropy in thermal evolution of Cu–O bond lengths and differences in the thermal behavior of PO4 and AsO4 tetrahedra. |
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