The 6 th Institute of Geology Exploration of Heilongjiang Province, Jiamusi 154002, Heilongjiang, China

The study of stream sediment and soil sampling indicate the two methods can be combined in geochemical prospecting. The sieving grain sizes of stream sediments ranging - 10��60 mesh, - 10��20 and - 20�� 40 mesh develop well with high contents, - 40��60 mesh has the lowest content, and the content of - 60 mesh fluctuates greatly. Au, Bi and Sn are greatly changed in content, variation coefficients are 0.41��1.41, 1.84�� 2.49 and 1.40��1.50, respectively, and the other elements pvariation coefficients are from 0.31 to 0.94 with little change. The soil survey shows that the reflecting abnormity preferably is in collectmiddle part of Blayer soil where Blayer grows well and in the collection of the B +C layer soil where Blayer poor in growing. The contents of elements increase from shallow part to deep, the intensity of abnormity also changes, but do not effect to discover abnormity.