Natural hydrothermal systems and experimental hot water/rock interactions (Part II)

Details Natural hydrothermal systems and experimental hot water/rock interactions (Part II) Natural hydrothermal systems and experimental hot water/rock interactions (Part II)

Apr 1967

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1967gecoa..31..519e&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 31, Issue 4, pp.519-538

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16

Scientific paper

A study was made of the reaction of volcanic rocks from the Taupo Volcanic Zone of New Zealand, and a greywacke, with water at temperatures 400 and 600°C. From analysis of the resultant solutions it was established that most solutes (K + , Rb + , Ca 2+ Mg 2+ , F - , SO 4 2- , SiO 2 and NH 3 ) are controlled in concentration by mineral solubility or ion exchange equilibria. Values of the atomic ratio Na / K in solution in contact with rhyolitic rooks ranged from 10 to 15 at 250° to 4 at 600°. Other features of the reaction solutions were their acidity when cooled, their extremely low concentration of magnesium, and their concentration of a large proportion of the chloride, boron and caesium from the original rocks.

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