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This article in SSSAJ

  1. Vol. 32 No. 5, p. 705-708
     
    Received: Sept 9, 1967
    Accepted: June 5, 1968


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doi:10.2136/sssaj1968.03615995003200050034x

The Distribution of Gold in the Silt Fraction of Some Soil Profiles and its Genetical Significance1

  1. N. J. Yassoglou and
  2. Catherine Nobeli2

Abstract

Abstract

The distribution of gold in the silt fraction of 13 soil profiles was studied. The element was determined by neutron activation analysis. Activation analysis can be successfully employed for the determination of gold in soil materials, where it is usually found in extremely small quantities ranging from 3 to 120 parts per billion (ppb).

It was found that silt and clay contain much higher amounts of gold than does sand. Parent materials which have undergone one cycle of soil formation seem to contain gold in the silt in the resistant metallic form. In other cases, the elements is associated with easily weatherable minerals and it is progressively lost from the silt fraction during processes of soil genesis. Gold could be used as an index of soil weathering, either as a resistant or as a removable constituent of the silt, depending on the composition and the origin of the parent material of the soil. It can also be used as an index of the lithological continuity of soil profiles.

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