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Channel Constituents in Beryl

Goldman, Don S. and Rossman, George R. and Parkin, Kathleen M. (1978) Channel Constituents in Beryl. Physics and Chemistry of Minerals, 3 (3). pp. 225-235. ISSN 0342-1791. doi:10.1007/BF00633572.

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The electronic absorption spectra of Fe^(2+) in non-chromium beryls are examined. Fe^(2+) in the Al-rich six-coordinate site produces absorption bands at about 820 nm and 970 nm polarized EIIc. Fe^(2+) in the channel produces bands at 820 nm (⊥c) and 2100 nm (IIc). Some blue beryls which are more intensely colored than most aquamarines, have an absorption band at ∼700 nm (‖c) which is suggested to arise from an Fe^(2+)/Fe^(3+) intervalence interaction. Fe^(2+) in both the six-coordinate site and the channel is identified in the Mössbauer spectra. The Mössbauer spectra of deep blue beryls are unusual and have not been satisfactorily explained. Color changes which accompany heating and irradiation are strongly influenced by the channel iron.

Item Type:Article
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Rossman, George R.0000-0002-4571-6884
Additional Information:© 1978 Springer-Verlag. Received December 19, 1977. We thank R. H. Currier (Arcadia, California) for providing samples of beryl for use in this study. Portions of this research were supported by the Earth Sciences Section, National Science Foundation, NSF Grant EAR76-02014, and the National Aeronautics and Space Administration, NASA Grant NGR 22-009-551.
Group:UNSPECIFIED, Division of Geological and Planetary Sciences
Funding AgencyGrant Number
NSF Earth Sciences SectionUNSPECIFIED
NSFEAR 76-02014
NASANGR 22-009-551
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Caltech Division of Geological and Planetary Sciences2968
Issue or Number:3
Record Number:CaltechAUTHORS:20140226-111341364
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Official Citation: Channel constituents in beryl S. Don Goldman, George R. Rossman, Kathleen M. Parkin Pages 225-235
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:44016
Deposited By: Ruth Sustaita
Deposited On:26 Feb 2014 20:56
Last Modified:10 Nov 2021 16:46

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