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Facts and Figures |
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name of sample |
Spurr Stop 33 |
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origin |
Crater Peak on the south side of Mount Spurr volcano, across Cook Inlet, Alaska, |
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USA, 125 km west of Anchorage. The particles are from the 17 September 1992 |
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eruption and were collected 185 km east of the volcano. |
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main constituents |
57-78 wt % glass, plagioclase feldspar, opx, magnetite, amphibole, cpx |
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particle size |
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reff=14.4 micrometer, veff =6.6 |
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particle shape |
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refractive index |
estimated to be around: |
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1.48-1.56 - i0.0018-0.02 |
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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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