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Published July 1, 1989 | public
Journal Article

The Water-Content of Nepheline

Abstract

The water content of nephelines from various localities were studied through thermal weight loss and single-crystal infrared spectroscopy. Typical water contents in nepheline are on the order of 0.2 to 0.5 wt. %. The H_2O molecule exists in multiple crystallographic orientations, presumably in the potassium site. Two orientations of water are indicated in the spectrum of nepheline from Monte Somma. When the crystal is heated to 350 °C, a third orientation develops.

Additional Information

© 1989 Springer-Verlag. Received June 7, 1988; accepted December 16, 1988. We thank Roger D. Aines for obtaining the TGA results and for discussions and assistance at the early stages of this project. Portions of this study were funded by the National Science Foundation (USA) grant EAR-86-18200, and the Austrian Fonds zur Förderung der wissenschaftlichen Forschung (project nr. 6324). Financial support to AB by the Fulbright Commission is also acknowledged. Contribution number 4648 from the Division of Geological and Planetary Sciences.

Additional details

Created:
August 22, 2023
Modified:
October 23, 2023