ИСТИНА

In Russia, in the Far East, there are a great number of brown coal deposits, which host industrial concentrations of Ge, Ga, Ve, Sc, W, Sb etc., with rare metal resources of many thousands of tons. The authors studied following coal deposits of the Far East of Russia: Khabarovsk Territory: Liansky, Hurmulinsky (Hurmulinsky Prospect), Khabarovsky, Bazovsky, deposits; Amur Region: Erkovetsky (Zapadny Prospect) deposit; Sakhalin Region: Novikovsky (Vostochy Prospect, reserve area of the Novikovsky section) deposit; Magadan Region: Lankovsky, Viliginsky (the Elikchan-Kupkinsky area), Elgensky (non-licensed stock of prospects) deposits; Kamchatka Region: Korfsky (non-licensed stock of prospects), Echvayamsky (Losiny lot) deposits. Rare metal resource potential of metal-bearing coals of the non-licensed stock of prospects in the Far East Federal District has been assessed according to categories of prognosticated resources («Р3» and «Р2» аccording to Russian classification). In 12 studied coal deposits, the amount of rare metals prognosticated resources of category Р2 is as follows: Sc – 11.98 thousand tons, Ga – 10.94 thousand tons, Ge – 7.18 thousand tons, Rb2O – 40 thousand tons, SrO – 137 thousand tons, Cs2O – 3.6 thousand tons, ZrO2 – 36.3 thousand tons, TR2O3 – 212.8 thousand tons. Category Р3: Sc – 14.4 thousand tons, Ga – 16.4 thousand tons, Ge – 9.8 thousand tons, Rb2O – 46.3 thousand tons, SrO – 125.7 thousand tons, Cs2O – 9.16 thousand tons, ZrO2 – 135.6 thousand tons, TR2O3 – 266.18 thousand tons. PGM of category Р2 amount to 15.1 tons and those of category Р3, 24.4 tons. Economic-geological evaluation based on consolidated indices of promising coal objects of the non-licensed stock of prospects of the Far East was made taking into account their rare metal potential. The account of rare and other valuable metals in the coal allows estimating more complete real cost of coal deposits and non-licensed stock of prospects, their profitability and investment appeal, promotes strengthening the mineral-raw base of metallurgical and other industries. Accounting and organization of accompanying mining of some rare and other valuable metals from metal-bearing coal deposits will allow essential increase in economic efficiency of the development of these deposits. GIS map with a database on metal contents in coals of the Far East accompanied by a set of graphic materials characterizing coal deposits of the Far East Federal Area has been compiled at a scale of 1:2,500,000. As a result of the study, a conclusion was drawn that it would be expedient to treat some coal deposits of the non-licensed stock of prospects of the Far East as complex deposits of a new type: rare metal-coal deposits and not only as raw sources of coal. The mentioned-above considerable prognostic resources of REM, Sc, V, Ga, Rb, Cs, Sr, platinum group metals as well as other metals in the studied deposits testify to a new nonconventional considerable mineral-raw base of rare metals and other valuable metals in brawn coal deposits.