Molar refraction of quartz family minerals |
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| Authors: | S K Nataraju D Krishnamurti |
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| Institution: | (1) Department of Physics, University of Mysore, Manasagangotri, 570006 Mysore, India |
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| Abstract: | Different polymorphs of silica and the opals exhibit significant variations in densities. The paper discusses and correlates
the variations in the molar refraction with density. It emerges that in different polymorphs of silica, the increase in density
involves a corresponding increase in the characteristic dispersion frequencies leading to a decrease in the molar refraction.
The variation of the molar refraction with density can be represented in terms of an elementary formula. The variation of
the molar refraction of opals with the water content in them is also accounted for. |
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| Keywords: | Molar refraction silica quartz opals polymorphism |
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