DIAMOND PLACERS OF AERODROMNAYA SPIT: SOURCES OF PLACER SUPPLY AND MINERALOGICAL FEATURES OF DIAMONDS

Diamonds of the Aerodromnaya Spit placer were studied. The studies show that the diamonds of the Aerodromnaya Spit placer are polygenic from the point of view of their primary sources. The majority of diamonds belong to the Verkhnemunskoe field, as evidenced by a significant number of diamonds in the placer with catalytic oxidation caverns characteristic of kimberlites of the Verkhnemunskoe field. An admixture of diamonds from unknown sources in the area of the Verkhnemunskoe kimberlite field is probable. Reliably present are "northern" diamonds, the sources of which are not known, and it is possible that these sources are Precambrian. "Northern" diamonds of the Aerodromnaya Spit placer mark the southern boundary of their distribution area.