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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
LOI1.30%
Oxide Weight 387.40
Formula Weight 392.51

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Typecodes Generic Material
Generic materials are those with no brand name. Normally they are theoretical, the chemistry portrays what a specimen would be if it had no contamination. Generic materials are helpful in educational situations where students need to study material theory (later they graduate to dealing with real world materials). They are also helpful where the chemistry of an actual material is not known. Often the accuracy of calculations is sufficient using generic materials.
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
Materials Mt. St. Helens Ash

By Tony Hansen


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