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Mount Pinatubo Ash

Alternate Names: Mount Pinatubo Volcanic Ash

Oxide Analysis Formula
CaO 5.60% 0.39
MgO 2.70% 0.26
K2O 1.60% 0.07
Na2O 4.40% 0.28
Fe2O3 5.60% 0.14
TiO2 0.80% 0.04
Al2O3 16.10% 0.62
SiO2 61.90% 4.04
LOI 1.30%n/a
Oxide Weight 387.40
Formula Weight 392.51

Related Information

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Typecodes Flux Source
Materials that source Na2O, K2O, Li2O, CaO, MgO and other fluxes but are not feldspars or frits. Remember that materials can be flux sources but also perform many other roles. For example, talc is a flux in high temperature glazes, but a matting agent in low temperatures ones. It can also be a flux, a filler and an expansion increaser in bodies.
Materials Volcanic Ash
Powdered volcanic ash is used to make ceramic glazes, some varieties have a chemistry similar enough to glaze that high percentages can be employed.
Materials Mt. St. Helens Ash
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