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Surface tension of natural silicate melts from 1,200-1,500 C and implications for melt structureThe surface tension between silicate liquid and gas is measured for four lava compositions (limburgite to andesite) from 1,200 to 1,500 C. It is noted that the magnitude of surface tension (gamma) is in the range 350-370 dynes/cm. Variations found in gamma as a function of liquid composition are small and have no obvious relation to liquid composition. Gamma is also found to vary little with furnace atmosphere - air, Ar, CO2, H2, CO and their mixtures. It is found that a relaxation time of hours to days, depending on temperature, is required before reproducible results can be obtained from originally crystalline starting material. The reproducible temperature dependence of gamma for complex silicate liquid solution is found to be small, positive, and a relatively simple function of liquid composition.
Document ID
19820029014
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Walker, D.
(Lunar and Planetary Institute, Houston, TX; Harvard University Cambridge, MA, United States)
Mullins, O., Jr.
(Lockheed Electronics Co., Inc. Houston, TX, United States)
Date Acquired
August 10, 2013
Publication Date
January 1, 1981
Publication Information
Publication: Contributions to Mineralogy and Petrology
Volume: 76
Subject Category
Geophysics
Accession Number
82A12549
Funding Number(s)
CONTRACT_GRANT: NSF OCE-79-09699
CONTRACT_GRANT: NASW-3389
CONTRACT_GRANT: NSF EAR-79-23977
Distribution Limits
Public
Copyright
Other

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