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Mica Genesis in Hawaiian Soils
Author(s) -
Juang T. C.,
Uehara G.
Publication year - 1968
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1968.03615995003200010008x
Subject(s) - mica , vermiculite , potash , soil water , chlorite , montmorillonite , geology , mineralogy , environmental chemistry , geochemistry , potassium , chemistry , soil science , paleontology , quartz , organic chemistry
A soil mica having a formula Na 0.11 NH4 0.06 K 1–24 (Al, Si) (Al, Fe, Mg) O 20 (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.