Abstract:Minerals of disintegrated alkaline-ultrabasic dike rocks exposed by wells within the rare-metal–rare earth Novobo-brovsky ore field (Middle Timan) were studied. Microprobe studies were conducted in CCU "Geoscience" (Syktyvkar) and the Institute of Experimental Geology, RAS (Chernogolovka). Primary mineral parage-neses are difficult to diag-nose due to strong secondary alteration of rocks. The primary minerals are phlogopite (XMg = 0.64–0.89) and minerals of the chromespinelides group (the central parts are rep… Show more
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