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Soil Science Society of America Journal Abstract -

Mica Genesis in Hawaiian Soils1


This article in SSSAJ

  1. Vol. 32 No. 1, p. 31-35
    Received: May 26, 1967
    Accepted: Sept 7, 1967

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  1. T. C. Juang and
  2. G. Uehara2



A soil mica having a formula Na0.11 NH40.06 K1–24 (Al, Si) (Al, Fe, Mg) O20 (OH)4 has been identified in soils of the wet uplands in the Hawaiian Islands. It contains 7.2% potash and is predominantly a mixer-layered mica with vermiculite-montmorillonite and chlorite. The mica is concentrated in the surface horizons, and its concentration increases with soils formed under increasing rainfall and elevation. Biological recycling of potash is proposed as a mechanism for its formation.

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