| Reference Type | Journal (article/letter/editorial) |
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| Title | Synthesis of K2SiSi3O9 with silicon in 4- and 6-coordination |
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| Journal | Mineralogical Magazine |
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| Authors | Kinomura, N. | Author |
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| Kume, S. | Author |
| Koizumi, M. | Author |
| Year | 1975 (December) | Volume | 40 |
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| Issue | 312 |
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| Publisher | Mineralogical Society |
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| Download URL | https://rruff.info/doclib/MinMag/Volume_40/40-312-401.pdf+ |
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| DOI | doi:10.1180/minmag.1975.040.312.09Search in ResearchGate |
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| Generate Citation Formats |
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| Mindat Ref. ID | 6896 | Long-form Identifier | mindat:1:5:6896:7 |
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| GUID | 0 |
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| Full Reference | Kinomura, N., Kume, S., Koizumi, M. (1975) Synthesis of K2SiSi3O9 with silicon in 4- and 6-coordination. Mineralogical Magazine, 40 (312) 401-404 doi:10.1180/minmag.1975.040.312.09 |
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| Plain Text | Kinomura, N., Kume, S., Koizumi, M. (1975) Synthesis of K2SiSi3O9 with silicon in 4- and 6-coordination. Mineralogical Magazine, 40 (312) 401-404 doi:10.1180/minmag.1975.040.312.09 |
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| In | (1975, December) Mineralogical Magazine Vol. 40 (312) Mineralogical Society |
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| Abstract/Notes | SummaryTwo kinds of vitreous material with composition K2GeSi3O9 and K2Si4O9 were treated under conditions of high temperature and pressure. The X-ray diffraction patterns of the products were similar to that of K2TiSi3O9, which has the wadeite, K2ZrSi3O9, structure.A natural crystal of K-feldspar was also treated under the same conditions. The product was found to consist of three phases, coesite, kyanite, and the above-mentioned K2Si4O9. Since Zr ions in wadeite are in a 6-coordinated site, one-quarter of Si ions in K2Si4O9 are considered to be in 6-coordination. This is the first silicate in which Si ions occupy sites of 4- and 6-coordinations in one crystal at the same time. |
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