Distribution of Trace Elements in the Altered Zones of Certain Kuroko Deposits
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Trace elements such as barium, strontium, gallium, boron, vanadium, lead, chromium, nickel, cobalt and tin were sought by spectroscopic analyses of clay specimens from altered zones of the Hanaoka and Hanawa Mines, Akita Prefecture.<BR>The results obtained are as follows:<BR>(1) Barium, vanadium, lead, chromium and nickel increase gradually toward an inner zone from the outermost fringe of the deposits. Gallium and boron show irregular distribution.<BR>(2) Tin and cobalt were not detechted in any altered zone of these deposits.<BR>(3) It is suggested that the analyses of trace elements will be an effective method for prosp ecting the Kuroko deposits.
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