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The Role of Adsorption in the Fractionation and Distribution of Elements

George W. DeVore
The Journal of Geology
Vol. 63, No. 2 (Mar., 1955), pp. 159-190
Stable URL: http://www.jstor.org/stable/30080876
Page Count: 32
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The Role of Adsorption in the Fractionation and Distribution of Elements
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Abstract

Adsorption is advanced as a principal factor in the distribution and fractionation of minor constituents in minerals. The effects of adsorption on the processes of nucleation and crystal growth are considered as important factors in controlling compositional relationships between coexisting minerals and possibly determining certain mineral assemblages. The possibility that adsorption during crystal growth may cause slight disequilibrium conditions is indicated. The changes of the trace element content in certain metamorphic rocks between different metamorphic facies are illustrated, and the possibility is discussed that such metamorphic transformations may provide a liberation of ore-forming materials.

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