| http://www.w3.org/ns/prov#value | - (0.3-2.5)R2 O : (0-0.8)M2 O : Al2 O3 : > 8 SiO2 wherein R is an organic nitrogen-containing cation derived from ethylenediamine or pyrrolidine and M is an alkali metal cation, and is characterized by a specified X-ray powder diffraction pattern.
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