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Volcanic Ash 2

From Ron Roy's MDT

OxideAnalysisFormula
CaO5.08%0.385
MgO2.43%0.256
K2O1.38%0.062
Na2O4.33%0.297
TiO20.59%0.031
Al2O317.48%0.728
SiO262.51%4.420
Fe2O35.35%0.142
MnO0.07%0.004
LOI0.77
Oxide Weight421.61
Formula Weight424.88
If this formula is not unified correctly please contact us.

Comparison of three volcanic ash chemistries

Comparison of three volcanic ash chemistries

Notice the amazing similarity between Mount St. Helen's and Mount Pinatubo ashes. And they are from opposite sides of the planet! Yet a common commercial material in North America, Navajo Pumice, is completely different.

Out Bound Links


By Tony Hansen

XML for Import into INSIGHT

<?xml version="1.0" encoding="UTF-8"?> <material name="Volcanic Ash 2" descrip="From Ron Roy's MDT" searchkey="" loi="0.00" casnumber=""> <oxides> <oxide symbol="CaO" name="Calcium Oxide, Calcia" status="" percent="5.080" tolerance=""/> <oxide symbol="MgO" name="Magnesium Oxide, Magnesia" status="" percent="2.430" tolerance=""/> <oxide symbol="K2O" name="Potassium Oxide" status="" percent="1.380" tolerance=""/> <oxide symbol="Na2O" name="Sodium Oxide, Soda" status="" percent="4.330" tolerance=""/> <oxide symbol="TiO2" name="Titanium Dioxide, Titania" status="" percent="0.590" tolerance=""/> <oxide symbol="Al2O3" name="Aluminum Oxide, Alumina" status="" percent="17.480" tolerance=""/> <oxide symbol="SiO2" name="Silicon Dioxide, Silica" status="" percent="62.510" tolerance=""/> <oxide symbol="Fe2O3" name="Iron Oxide, Ferric Oxide" status="" percent="5.350" tolerance=""/> <oxide symbol="MnO" name="Manganous Oxide" status="" percent="0.070" tolerance=""/> </oxides> <volatiles> <volatile symbol="LOI" name="Loss on Ignition" percent="0.770" tolerance=""/> </volatiles> </material>

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