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・ Various applications of weathered volcanic ash
Zeolite is one of the weathered and transmuted volcanic ashes under characteristic environmental conditions.
Industrial worlds have paid attention to zeolite as one of the inorganic industrial materials until now.
Its main ingredients are silicon oxide SiO2 , aluminum oxide Al2O3 , calcium oxide CaO , sodium oxide NaO , kalium oxide K2O and water H2O , etc, these are very similar to ingredients of natural volcanic ash, therefore, it's supposed that partial ingredients of the volcanic ashes were dissolved and transmuted.
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