and mined in our country. find out to him deputy director general of the scientific and practical center for geology of the ministry of nature and environmental protection of belarus galina borisovnaello hello ekaterina galina borisovna let's start with what kind of sands are in general and smoothly approach our main character, the creator of the sands - it's already, well, transformed material from previously such parent rocks, which poured out in antiquity, and now, under different conditions, these rocks were destroyed, forming sands of various compositions, forming, maybe there minerals that are out of the rocks already. given in their composition, they also belong to those, uh, from which they were formed, here we have the usual ordinary, yes, spar irrigation. quartz. they are also formed from granites from rocks of acidic composition. so, galerites can have different compositions there. here is the sand already enriched with glauconite. that is, it was some kind of shale that contained such a little green additive, but this is pure quartz sand with you. you can see that they are very different in color. quartz sand its origin, two, when the parent rocks were destroyed and th