Typochemism of beryl of Sherlovaya Mountain (Southeastern Transbaikalia)
New data on the chemical composition of the beryl deposits of bismuth, tin, tungsten and jewelry stones Sherlovaya Mountain are given. Among beryl crystals, aquamarine, green beryl and heliodor are developed. More than 200 chemical and microprobe analyzes have been compiled and it is determined that the beryl is weakly alkaline: the content of Na 0.003-0.012 formula coefficients, and Cs - 0.0005-0.0041 and the content of beryl does not differ. In aquamarine, bivalent Fe prevails, trivalent in heliodor, in green their content is approximately equal. As confirmed by optical spectroscopy data, the absorption maximum in the region of 700 and 800 nm-1 is typical of fermented Fe aquamarine, the minimum is for the heliodor, and the oxide one in the region of 360 nm-1 for the heliodor. The correlation between the color and intensity of the EPR signal Fe3 + has been established. The typochemical characteristic of green beryl of the Sherlovaya Gora is the highest V content and approximately equal ratios of divalent and trivalent Fe. The content of V in crystals of blue beryl is minimal.