Kate Smith on mon 1 mar 99
Here is an analysis of the Volcanic Ash sold by one of the local pottery
suppliers in the Twin Cities, Minnesota. The material
supplier/manufacturer is Hess Pumice Products.
The chemical composition is as follows, expressed as a percentage.
SiO2 70.5
Al2O3 13.5
Fe2O3 1.1
FeO 0.1
H2O 3.4
Na 1.6
K 1.8
Ca 0.8
TiO2 0.2
SO3 0.1
MgO 0.5
Pb 1.0
Phil & Kate Smith
PotterSmiths'
White Bear Lake, MN
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