American Mineralogist
REGULAR ARTICLE
161 Syntaxic intergrowths in the andorite series
172 Fletcher’s indicatrix and the electromagnetic theory of light
193 High temperature phases from kaolinite and halloysite
208 Whewellite from a septarian limestone concretion in marine shale near Havre, Montana
215 The preparation of specimens for the focusing-type x-ray spectrometer
222 Saponite near Milford, Utah
231 Crystal structure of magnesium-vermiculite
256 Relative stabilities of some simple silicates as related to the polarization of the oxygen ions
296 Acceptance of the Roebling Medal of The Mineralogical Society of America
302 Acceptance of The Mineralogical Society of America Award
352 Correspondents, fellows and members of The Mineralogical Society of America
386 Channels in thin section–a reply
391 The structural formula of an antigorite from Venezuela
393 A simple microspectroscope
395 Geikielite from Mount Jemorakly-Tube, North Caucasus, U.S.S.R.
397 A corrected unit cell for beryllonite
AWARD
293 Presentation of the Roebling Medal of the Mineralogical Society of America to William Frederick Foshag
300 Presentation of The Mineralogical Society of America Award to Louis H. Ahrens
NEW MINERAL NAMES and DISCREDITED MINERALS
402 New mineral names; Discredited minerals; New data
NOTES and NEWS
384 “Notes and news: Occurrence of “”Channels”” in thin sections”
BOOK REVIEW
399 Book reviews
PROCEEDINGS
304 List of former officers and meeting places
304 Proceedings of the thirty-fourth annual meeting of The Mineralogical Society of America
382 Mineralogical Society (London)
MEMORIAL
272 Memorial of A. Albert Klein
277 Memorial of Olan Ivan Lee
280 Memorial of Paul Niggli
284 Memorial of Frederick Eugene Wright
TABLE OF CONTENTS
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SPECIAL COLLECTIONS
Table of Contents
AmMin submission to acceptance/”first publication” is at a record average of about three to four months. Our acceptance to “final” publication is presently another 13 months on average.
Special Collections
American Mineralogist is an international journal that publishes mineralogical papers of broad interest to the geoscience and materials science community.