| Reference Type | Journal (article/letter/editorial) |
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| Title | The stability of tobermorite in the system CaO-SiO2-H2O at elevated temperatures and pressures |
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| Journal | Mineralogical Magazine and Journal of the Mineralogical Society |
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| Authors | Speakman, K. | Author |
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| Year | 1968 (December) | Volume | 36 |
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| Issue | 284 |
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| Publisher | Mineralogical Society |
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| Download URL | https://rruff.info/doclib/MinMag/Volume_36/36-284-1090.pdf+ |
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| DOI | doi:10.1180/minmag.1968.036.284.06Search in ResearchGate |
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| Generate Citation Formats |
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| Mindat Ref. ID | 6206 | Long-form Identifier | mindat:1:5:6206:4 |
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| GUID | 0 |
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| Full Reference | Speakman, K. (1968) The stability of tobermorite in the system CaO-SiO2-H2O at elevated temperatures and pressures. Mineralogical Magazine and Journal of the Mineralogical Society, 36 (284) 1090-1103 doi:10.1180/minmag.1968.036.284.06 |
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| Plain Text | Speakman, K. (1968) The stability of tobermorite in the system CaO-SiO2-H2O at elevated temperatures and pressures. Mineralogical Magazine and Journal of the Mineralogical Society, 36 (284) 1090-1103 doi:10.1180/minmag.1968.036.284.06 |
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| In | (1966) Mineralogical Magazine Vol. 36 (284) Mineralogical Society |
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| Abstract/Notes | SummaryHydrothermal studies in the silica-rich region of the CaO-SiO2-H2O system have given information on the stability field of tobermorite. At saturated steam pressures tobermorite is unstable relative to xonotlite (C6S6H) above 140 °C but between 10 000 and 40 000 lb/in.2 (69 and 276 N/mm2), the decomposition temperature is raised to 285±5 °C. Tobermorite is stable at all compositions between C/S = 0·67 and 1·0 up to this temperature and has a formula close to C5S6H5. Variable compositions reported earlier are thought to be mixtures rather than lime-rich or silica-rich tobermorites.Data have also been collected on the equilibrium assemblages below C/S = 0·67 and between C/S = 1·0 and 1·5 involving truscottite, gyrolite, xonotlite, foshagite, and hillebrandite. |
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