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Science 17 March 1967:
Vol. 155. no. 3768, pp. 1413 - 1417
DOI: 10.1126/science.155.3768.1413
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Articles

Metastable Superheated Ice in Liquid-Water Inclusions under High Negative Pressure

Edwin Roedder 1

1 U.S. Geological Survey, Washington, D.C. 20242

In some microscopic inclusions (consisting of aqueous liquid and vapor) in minerals, freezing eliminates the vapor phase because of greater volume occupied by the resulting ice. When vapor fails to nucleate again on partial melting, the resulting negative pressure (hydrostatic tension) inside the inclusions permits the existence of ice I crystals under reversible, metastable equilibrium, at temperatures as high as +6.5°C and negative pressures possibly exceeding 1000 bars.


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