An examination of geochemical data is made by statistical methods. Values are plotted on logarithmic probability paper. In most cases results suggest that more than one distribution may be present. Examples and proposed interpretations are given for data for mineralization in rock and soil, for biogeochemical values, for Fe in soil, and clay size material in soil. It is suggested that such tests may be useful in exploration and in evaluation of some of the large amounts of collected geochemical data.

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