Diamondiferousness of Mesozoic-Cenozoic deposits at the territory of Perm Region platform part
Concentrates of spiral enrichment of fine-grained material (less than 1 mm) from big samples were investigated. Such 17 samples were taken from Mesozoic and Cenozoic sediments of the Vesljana River and the Lolog River basins. Three diamonds were found in Middle Jurassic deposits and heterogenious sediments. The diamonds are 0.5-0.2 mm in size and have complex crystal form. Mesozoic and Cenozoic sediments contain pyropes and chromium-diopsides too. Mineral composition of diamondiferous deposits is specifical. It is possible to organize the prospecting of kimberlite tubes at the territory of platform part of Perm Region using fine crystals of diamond.