Paleozoic U-Pb Age of Rutile Inclusions in Diamonds of the V-VII Variety from Placers of the Northeast Siberian Platform

摘要

Diamonds attributed according to the classification of Yu.L. Orlov to the Vand VII varieties are widespread in rich placers of the northeastern part of the Siberian Platform [6]. Mineralogical investigation (certification) of these diamonds showed that they represent a unified genetical type subdivided by Orlov according to the following formal characteristics: diamonds of the V variety are represented by monocrys-tals, and diamonds of the VII variety are represented by intergrowths. Thus, we unite them into one variety V-VII [2].