| Reference Type | Journal (article/letter/editorial) |
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| Title | An EXAFS study of cation site distortions through the P2/c-P1̄ phase transition in the synthetic cuproscheelite-sanmartinite solid solution |
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| Journal | Mineralogical Magazine | ISSN | 0026-461X |
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| Authors | Schofield, P. F. | Author |
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| Charnock, J. M. | Author |
| Cressey, G. | Author |
| Henderson, C. M. B. | Author |
| Year | 1994 (June) | Volume | 58 |
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| Issue | 391 |
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| Publisher | Mineralogical Society |
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| Download URL | https://rruff.info/doclib/MinMag/Volume_58/58-391-185.pdf+ |
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| DOI | doi:10.1180/minmag.1994.058.391.01Search in ResearchGate |
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| Generate Citation Formats |
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| Mindat Ref. ID | 2022 | Long-form Identifier | mindat:1:5:2022:4 |
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| GUID | 0 |
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| Full Reference | Schofield, P. F., Charnock, J. M., Cressey, G., Henderson, C. M. B. (1994) An EXAFS study of cation site distortions through the P2/c-P1̄ phase transition in the synthetic cuproscheelite-sanmartinite solid solution. Mineralogical Magazine, 58 (391) 185-199 doi:10.1180/minmag.1994.058.391.01 |
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| Plain Text | Schofield, P. F., Charnock, J. M., Cressey, G., Henderson, C. M. B. (1994) An EXAFS study of cation site distortions through the P2/c-P1̄ phase transition in the synthetic cuproscheelite-sanmartinite solid solution. Mineralogical Magazine, 58 (391) 185-199 doi:10.1180/minmag.1994.058.391.01 |
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| In | (1994, June) Mineralogical Magazine Vol. 58 (391) Mineralogical Society |
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| Abstract/Notes | AbstractEXAFS spectroscopy has been used to monitor changes in divalent cation site geometries across the P2/c-P1̄ phase transition in the sanmartinite (ZnWO4)-cuproscheelite (CuWO4) solid solution at ambient and liquid nitrogen temperatures. In the ZnWO4 end member, Zn occupies axially-compressed ZnO6 octahedra with two axial Zn-O bonds at approximately 1.95 Å and four square planar Zn-O bonds at approximately 2.11 Å. The substitution of Zn by Cu generates a second Zn environment with four short square planar Zn-O bonds and two longer axial Zn-O bonds. The proportion of the latter site increases progressively as the Cu content increases. Cu EXAFS reveals that the CuO6 octahedra maintain their Jahn-Teller axially-elongate geometry throughout the majority of the solid solution and only occur as axially-compressed octahedra well within the stability field of the Zn-rich phase with monoclinic long-range order. |
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