| Reference Type | Journal (article/letter/editorial) |
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| Title | Forsterite dissolution in superheated basaltic, andesitic and rhyolitic melts |
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| Journal | Mineralogical Magazine | ISSN | 0026-461X |
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| Authors | Donaldson, C. H. | Author |
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| Year | 1990 (March) | Volume | 54 |
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| Issue | 374 |
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| Publisher | Mineralogical Society |
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| Download URL | https://rruff.info/doclib/MinMag/Volume_54/54-374-67.pdf+ |
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| DOI | doi:10.1180/minmag.1990.054.374.06Search in ResearchGate |
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| Generate Citation Formats |
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| Mindat Ref. ID | 1586 | Long-form Identifier | mindat:1:5:1586:2 |
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| GUID | 0 |
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| Full Reference | Donaldson, C. H. (1990) Forsterite dissolution in superheated basaltic, andesitic and rhyolitic melts. Mineralogical Magazine, 54 (374) 67-74 doi:10.1180/minmag.1990.054.374.06 |
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| Plain Text | Donaldson, C. H. (1990) Forsterite dissolution in superheated basaltic, andesitic and rhyolitic melts. Mineralogical Magazine, 54 (374) 67-74 doi:10.1180/minmag.1990.054.374.06 |
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| In | (1990, March) Mineralogical Magazine Vol. 54 (374) Mineralogical Society |
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| Abstract/Notes | AbstractDissolution rates of small forsterite spheres in superheated melts of basalt, andesite and rhyolite composition have been measured at 1300°C, atmospheric pressure. The rate is constant (83 µm hr−1) in the basalt, regardless of run duration. In the andesite the initial dissolution rate is 200µm hr−1, followed by a decrease to a constant value of 16µmhr−1 in 2–3 hours. Dissolution rate in the rhyolite decreases from an initial value of 1.7 to <0.1 µmhr−1 over 280 hours and never reaches a constant rate. Once the rate of dissolution has become constant, the film of contaminated melt that forms in melt about a crystal does not thicken with time, indicating attainment of a steady-state condition. Steady state is attributed to natural convection arising from the difference in density between the film of contaminated melt surrounding a crystal and that beyond. The density difference is approximately 2% of the density of the rock melt. |
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