In mineral group II (tectosilicates) the percentages of leached samples are about: 12 % for Cs-AS, 0.67 % for ORT and 0.65 % of ANALC. Similarly in-group III (smectites) the percentages of leached samples are about: 4.8 % for Na-MMT and 2.1 % for Cs-MMT; in-group IV (zeolites) the percentages of leached samples are about: 5.3 % for Cs-Z, 3.2 % for NaY-Z and 1.8 % for Na4A-Z.
Leaching tests with [K.sub.0.92][Na.sub.0.08][Al.sub.0.97][Si.sub.3.05][O.sub.8] (ORT), [Na.sub.0.90][K.sub.0.10][Al.sub.0.97] [(Si[O.sub.3]).sub.2].[H.sub.2]O (ANALC) and CsAlSi[O.sub.4] (Cs-AS) validate that with increasing proportion of Al/Si in mineral formula (FMR) the SMR of alkali elements (Alk/Si) and Al/Si in water leachates increase (Table 4).
The zeolite minerals belong also to tectosilicates but in contrast with Cs-AS, ANALC and ORT they form complicated structure with relative big cavities among their tetrahedrons.