PT conditions and trace element variations of picroilmenites and pyropes from placers and kimberlites in the Arkhangelsk region, NW Russia von Afanasiev, V.P., Ashchepkov, I.V., Verzhak, V.V., O’Brien, H., Palessky, S.V.

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TECHNOLOGY TO PROCESS TAILINGS OF DIAMOND MINING INDUSTRY ( VARIANTS ) von VERZHAK D.V, ZUEV V.M, GARANIN V.K, GARANIN K.V, VERZHAK V.V, PYLAEV N.F, BEZBORODOV S.M, KUDRJAVTSEVA G.P

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METHOD FOR MINING DIAMOND KIMBERLITE PIPES von VALUEV E.P, GUS'KOV JU.A, DOBROMYSLOV V.G, VERZHAK V.V, FORTYGIN V.S, STEPANOV A.N, LEVCHENKO V.A, GOROKHOV I.JU

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