Abstract
When halite is grown above room temperature and cooled, vacuoles are produced in the crystal's fluid inclusions owing to the contraction of the fluid. Upon reheating, the vacuoles disappear, presumably at the growth temperature. In order to correlate growth and vacuole disappearance temperature, halite crystals were grown at controlled temperatures by evaporation of sea water in a constant-temperature oven. The highest (and usually presumed to be the most accurate) disappearance temperatures of the vacuoles are above the growth temperature for the halite grown below about 72° C, and below the growth temperature for the halite grown above about 72° C. It is suggested that anomalously high disappearance temperatures may be due to the presence of CO2, whereas vacuole disappearance temperatures below growth temperatures may be due to leakage of brine into liquid inclusions.
Published Version
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