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Facts and Figures |
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name of sample |
Redoubt B |
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origin |
Redoubt volcano, Cook Inlet, Alaska, USA, 283 km southwest of Anchorage. |
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The particles are from the 1989-1990 eruption and were collected 200 km |
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from the volcano. The coarse fraction was removed by sieving. |
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main constituents |
68-76 wt % glass, plagioclase feldspar, hornblende, cps, opx, magnetite, ilmenite |
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particle size |
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reff=6.4 micrometer, veff =7.6 |
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particle shape |
Similar to Redoubt A particles irregular (SEM image) |
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refractive index |
estimated to be around: |
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1.48-1.56 - i0.0018 |
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color |
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scattering matrix |
from 3-174 degrees scattering angle |
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wavelength |
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article |
Scattering matrices of volcanic ash particles of Mnt. St. Helens, Redoubt, and Mount |
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Spurr volcanoes |
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Muñoz O, Volten H, Hovenier JW. Veihelmann B, van der Zande WJ, Waters LBFM, Rose WI |
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Journal of Geophysical Research, 109,10.1029/2004JD004684,2004 |
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