Abstract

The stability of liquid inclusions in a Brazilian quartz crystal has been investigated. The quartz was subjected to high external water pressure which caused water to move into the vacuoles. Liquid was forced out of the vacuoles by heating the quartz above the temperature at which the vacuoles were just filled. It is suggested that the amount and composition of liquid in vacuoles depend on ambient pressure and temperature and, therefore, may vary during geologic time.

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