| Reference Type | Journal (article/letter/editorial) |
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| Title | Nomenclature of the phosphoferrite structure type: refinements of landesite and kryzhanovskite |
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| Journal | Mineralogical Magazine | ISSN | 0026-461X |
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| Authors | Moore, P. B. | Author |
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| Araki, T. | Author |
| Kampf, A. R. | Author |
| Year | 1980 (June) | Volume | 43 |
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| Issue | 330 |
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| Publisher | Mineralogical Society |
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| Download URL | https://rruff.info/doclib/MinMag/Volume_43/43-330-789.pdf+ |
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| DOI | doi:10.1180/minmag.1980.043.330.14Search in ResearchGate |
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| Generate Citation Formats |
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| Mindat Ref. ID | 3136 | Long-form Identifier | mindat:1:5:3136:7 |
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| GUID | 0 |
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| Full Reference | Moore, P. B., Araki, T., Kampf, A. R. (1980) Nomenclature of the phosphoferrite structure type: refinements of landesite and kryzhanovskite. Mineralogical Magazine, 43 (330) 789-795 doi:10.1180/minmag.1980.043.330.14 |
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| Plain Text | Moore, P. B., Araki, T., Kampf, A. R. (1980) Nomenclature of the phosphoferrite structure type: refinements of landesite and kryzhanovskite. Mineralogical Magazine, 43 (330) 789-795 doi:10.1180/minmag.1980.043.330.14 |
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| In | (1980, June) Mineralogical Magazine Vol. 43 (330) Mineralogical Society |
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| Abstract/Notes | SynopsisThe ideal end-members reddingite, Mn32+ H2 O)3(PO4)2, phosphoferrite, (H 2O)3(PO4)2, and kryzhanovskite, (OH)3(PO4)2 form a complex triple series. Similarities in crystal axes and pronounced differences in site preferences have led to erroneous indexing of the powder data and subsequent errors in cell refinements. Writing the general formula M(1)M(2)2[(H2O),(OH)]3(PO4)2, the following end-member names apply:Type landesite,Ca0.4Mg1.2(OH)3.2(H2O)8.8(PO4)8.0, has a = 9.458(3) Å, b = 10.185(2) Å, c = 8.543(2) Å, space group Pbna. R = 5.2% for 1821 independent reflexions (Mo-Kα radiation). The distance averages are M(1)-O = 2.098 Å, M(2)-O = 2.205 Å, P-O = 1.539 Å. Cotype kryzhanovskite,Ca0.5Mg0.4(OH)7.3(H4O)4.7(PO4)8.0, has a = 9.450(2) Å, b = 10.013(2), c = 8.179(2). R = 7.2% for 1,703 independent reflexions (Mo-Kα radiation). The distance averages are M(1)-O = 2.017 Å, M(2)-O = 2.115, P-O = 1.542.Computed powder pattern intensities from the structure data admitted extensive revisions of earlier published Miller indices and revised powder data are presented. |
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