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Science 12 May 1967:
Vol. 156. no. 3776, pp. 830 - 832
DOI: 10.1126/science.156.3776.830
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Articles

Geochemical Evidence of Present-Day Serpentinization

Ivan Barnes 1, V. C. LaMarche Jr. 1, and Glen Himmelberg 1

1 U. S. Geological Survey, Menlo Park, California 94025

Ultrabasic (pH > 11) water issues from some fresh ultramafic bodies. The properties of the ultrabasic solutions are believed to be due to current reactions yielding serpentine from primary olivines and pyroxenes. The low concentrations of divalent airon. divalent magnesium, and dissolved silica from the serpentinization require an increase in rock volume.


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