Relevance of the discussed issue. Irbit diatomite deposit is one of the largest in the Russian Federation and in Trans-Urals region and it is currently used for production of low value-added goods. Despite the long history of industrial exploration. the comprehensive studies of the material composition of Irbit diatomites were never held. https://parisnaturalfoodes.shop/product-category/natural-eyes-pinhole-glasses-reader-styl/