| Reference Type | Journal (article/letter/editorial) |
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| Title | Refinement of hydrogen positions in natural chondrodite by powder neutron diffraction: implications for the stability of humite minerals |
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| Journal | Mineralogical Magazine |
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| Authors | Berry, A. J. | Author |
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| James, M. | Author |
| Year | 2002 (June) | Volume | 66 |
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| Issue | 3 |
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| Publisher | Mineralogical Society |
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| DOI | doi:10.1180/0026461026630040Search in ResearchGate |
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| Generate Citation Formats |
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| Mindat Ref. ID | 243361 | Long-form Identifier | mindat:1:5:243361:9 |
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| GUID | 0 |
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| Full Reference | Berry, A. J., James, M. (2002) Refinement of hydrogen positions in natural chondrodite by powder neutron diffraction: implications for the stability of humite minerals. Mineralogical Magazine, 66 (3) 441-449 doi:10.1180/0026461026630040 |
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| Plain Text | Berry, A. J., James, M. (2002) Refinement of hydrogen positions in natural chondrodite by powder neutron diffraction: implications for the stability of humite minerals. Mineralogical Magazine, 66 (3) 441-449 doi:10.1180/0026461026630040 |
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| Abstract/Notes | AbstractThe structure of a natural sample of chondrodite (Mg4.89Fe0.07Si2.04O8F1.54(OH)0.46) was refined using powder neutron diffraction data and the Rietveld technique (P21/b; Z = 2; a = 4.7204(1)Å; b = 10.2360(3)Å; c = 7.8252(2)Å; α = 109.11(1)°; V = 357.26(2)Å3). Hydrogen was found to occupy the H1 site. The significance of hydrogen at this site is discussed in terms of hydrogen-bond stabilization of humite structures containing varying amounts of OH, F and Ti. Arguments are proposed as to why the F and Ti contents of natural humites usually result in only one H per formula unit when there is no crystal-chemical reason why fully hydrated samples should not be favoured. |
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