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Infrared Study of Hydrogen Concentration in Brazilian Quartz

โœ Scribed by J.A. Medeiros; R.S. Katiyar; M.A.F. Scarparo

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
188 KB
Volume
112
Category
Article
ISSN
0022-4596

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โœฆ Synopsis

Infrared transmission spectroscopy is used to determine the amount of hydrogen in several kinds of Brazilian (\alpha)-quartz. The experiments on the crystallographically oriented samples were used for the first time to verify the applicability of Paterson's formula (M. S. Paterson, Bull. Mineral. 105, 20, 1982) using the appropriate orientational factors for polarized and unpolarized radiations. The use of crystallographically oriented samples also allowed us to determine the average preferential direction of the (\mathrm{OH}) dipoles which make an angle of (71^{\circ}) with respect to the optic axis. The hydrogen concentration in the 1st-quality layer of Brazilian quartz. was found to be below (70 \mathrm{ppm}). 1994 Acadenic Press. Inc.

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