Interfacial interaction of water and silicate minerals
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Abstract
This program has relation to the categories of the nature of water and water cycle. In particular, the study deals with the basic interactions of water with the surface of minerals. The program has direct application to the areas groundwater and water in soils in the category of water cycle. We have investigated the problems of bonding and migration of water molecules upon sheet structures of mineral samples. The minerals used in the program have surface structures that are similar and in some cases identical to those found in clays. This study focused upon the molecular level rather than on the bulk property level of capillarity and hydraulics. The interlayer binding energy of selenite was measured. The measurements were made within a test chamber in which the temperature and atmospheric pressure of the sample could be controlled and monitored. There was found to be no significant difference in the IBE of selenite in air (716 ergs/cm^2) and in vacuum (704 ergs/cm^2). There was found to be a slight difference in the low temperature IBE (768 ergs/cm^2) and the high temperature IBE (720 ergs/cm^2); however, this was attributable to effects of cold on the mechanism. It was concluded that the IBE io independent of atmospheric and temperature effects within the range of temperature and pressure studied.
This material is based upon work supported by the U.S. Geological Survey and the Missouri Water Center under the Grant/Cooperative Agreement.
The views and conclusions contained in this document are those of the authors and should not be interpreted as representing the opinions or policies of the U.S. Geological Survey or Missouri Water Center. Mention of trade names or commercial products does not constitute their endorsement by the U.S. Geological Survey or Missouri Water Center.
This material is based upon work supported by the U.S. Geological Survey and the Missouri Water Center under the Grant/Cooperative Agreement.
The views and conclusions contained in this document are those of the authors and should not be interpreted as representing the opinions or policies of the U.S. Geological Survey or Missouri Water Center. Mention of trade names or commercial products does not constitute their endorsement by the U.S. Geological Survey or Missouri Water Center.