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Gold abundance in granitic rocks of different geological periods in southern China hasbeen estimated.A review of the quantitative data available indicates that unaltered graniticrocks have a rather restricted range in gold content,rarely exceeding 4 ppb and generallyranging from 1.4 to 3.3 ppb.The mean gold content tends to decrease from basic to acidicgranitoids.This tendency suggests that gold isnot concentrated in the residual silicate melt-during the formation of granitic rocks.It is necessary to establish the background valuesof gold for various rock types although it seems that gold abundance data for the graniticrocks of southern China can necessarily provide any geochemical clues or guides to areas fa-vorable or unfavorable for gold mineralization.
Gold abundance in granitic rocks of different geological periods in southern China hasbeen estimated. A review of the quantitative data available that said unaltered graniticrocks have a rather restricted range in gold content, very exceeding 4 ppb and generallyranging from 1.4 to 3.3 ppb. content tends to decrease from basic to acidic gramranitoids.This tendency suggests that gold is concentrated in the residual silicate melt-during the formation of granitic rocks.It is necessary to establish the background values of gold for various rock types although it seems that gold abundance data for the graniticrocks of southern China may offered any geochemical clues or guides to areas fa-vorable or unfavorable for gold mineralization.