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Figure 4: Natural zeolite of the Aydag deposit
(Tovuz region of Azerbaijan).
Natural zeolite-clinoptilolite has the following specific physicochemical properties:
intense ion exchange and selectivity;
reversible hydration and dehydration;
extremely high gas absorption capacity;
high temperature resistance;
resistance to aggressive environments;
Natural zeolite-clinoptilolite (fig.4.) is characterized by high heat resistance and resistance to aggressive substances, in particular to acids and ionizing radiation. In humans and animals, no harmful effects were found with prolonged use in tolerated doses of drugs based on natural clinoptilolite zeolite. Natural clinoptilolite-zeolite acts as an auto-bioregulator (autopilot) in humans and animals, with hydrated SiO2 playing a major role.
2.3. The chemical composition of the zeolite-clinoptilolite of the Aydag deposit
Clinoptilolite-zeolite deposits on our planet do not have the same composition. An essential factor is the Si/Al ratio. This should be at least 1: 4.
Figure 5: (IR) spectrum (a) and diffractogram (b) of the natural zeolite of the Aydag deposit.
Studies of the natural zeolite of the Aydag deposit were carried out by a number of methods and instruments. So, gamma spectrometric analysis was carried out using a SARI-2 gamma spectrometer. In addition, studies were carried out on a DRON-1 X-ray diffractometer and using an IR (IR) spectrometer, fig.5.
Studies of the natural zeolite of the Aydag deposit were carried out by a number of methods and instruments. So, gamma spectrometric analysis was carried out using a SARI-2 gamma spectrometer. In addition, studies were carried out on a DRON-1 X-ray diffractometer and using an IR spectrometer. In figure 3. shown: IR spectrum (a) and diffraction pattern (b) of the natural zeolite of the Aydag deposit.
The oxide formula of clinoptilolite is : (Na2K2)∙O∙Al2O3∙10SiO2∙8H2O, and its crystal chemical formula is Ca4,5∙Al9Si24O72.
In the composition of the zeolite-clinoptilolite of the Aydag deposit, the Si / Al ratio is: 4.25 - 5.25
Table 3. The chemical and microelement composition of the natural zeolite of the Aydag deposit.
| Chemical compound | Content in % | Name trace element | Content in% | |
| SiO2 | 64,80 | Be | 0,0001 | |
| Al2O3 | 10,80 | Mn | 0,02 | |
| Fe2O3 | 1,30 | Pb | 0,002 | |
| TiO2 | 0,23 | Mg | >1% | |
| CaO | 2,92 | Sl | >1% | |
| MgO | 3,83 | Ga | 0,001 | |
| P2O5 | 0,08 | Fe | >1% | |
| MnO | 10,02 | Sn | < 0,001% | |
| K2O | 1,54 | Al | >1% | |
| Na2O | 2,48 | Ti | 0,1 | |
| SO3 | 0,02 | V | 0,003 | |
| Cu | <0.01 | Cu | 0,002 | |
| Zn | <0,01 | Zn | 0,01 | |
| ППП (Loss on ignition) | 11,69 | Zr | 0,001 | |
| H2O | 5,32 | Sr | 0,03 | |
| Ba | 0,06 | |||
| Ca | >1% |
2.4. Physical characteristics of the zeolite-clinoptilolite of the Aydag deposit
According to the conclusion of laboratory studies of the gamma spectroscopy department of the geological environment of the Institute of Geology of the National Academy of Sciences of Azerbaijan (06/01/2011), measurements using the SARI-2 gamma spectrometer showed that the natural zeolite-clinoptilolite of the Aydag deposit corresponds to the Technical Conditions TŞAZ1781832-01- in terms of radioactivity 2001 and State standards (RSN-31-93, QOST 3010894, GOST 12.1.007-76) and can be used for the production of food additives.
Table 4. The physical characteristics of the zeolite of the Aydag deposit.
| №№ | Parameter Name | Parameter value |
| 1 | Specific Pore Volume V | 0,34 cm3 / g |
| 2 | Specific micropore volume Vm | 0,13 cm3 / g |