American Mineralogist
REGULAR ARTICLE
139 Screw dislocations and charge balance as factors of crystal growth
147 Synthesis and stability of minerals in the system MgO-Al2O3-SiO2-H2O
179 Simple method for the determination of the plagioclase feldspars
186 Directional grinding hardness in a diamond: A further study
192 Trimorphism of zinc sulfide
201 Rabbittite, a new uranyl carbonate from Utah
207 Navajoite, a new vanadium oxide from Arizona
213 Refinement of the structure of cubanite, CuFe2S4
226 The crystal structure of berthierite, FeSb2S4
239 Stevensite, a montmorillonite-type mineral showing mixed layer characteristics
248 Crystallography of jadeite crystals from near Cloverdale, California
261 Application of the electron microscope to mineralogic studies
275 Baddeleyite from Phalaborwa, Eastern Transvaal
292 Acceptance of the Roebling Medal of the Mineralogical Society of America
296 Acceptance of The Mineralogical Society of America Award
349 Hydrohausmannite and hydrohetaerolite
353 Secondary alteration of chromite
357 Spot grinding, a technique for finishing rock thin sections
AWARD
289 Presentation of the Roebling Medal of the Mineralogical Society of America to Cecil Edgar Tilley
295 Presentation of The Mineralogical Society of America Award to Hatten S. Yoder, Jr.
NEW MINERAL NAMES and DISCREDITED MINERALS
367 New mineral names; New data; Discredited minerals
NOTES
356 “Note of the significance of “”turbid”” feldspars”
NOTES and NEWS
348 Notes and news: Oxidation of montmorillonite during laboratory grinding
BOOK REVIEW
360 Book reviews
PROCEEDINGS
299 List of former officers and meeting places
299 Proceedings of the thirty-fifth annual meeting of The Mineralogical Society of America at Los Angeles, California
343 Mineralogical Society (London)
MEMORIAL
283 Memorial of Lawson H. Bauer
286 Memorial of Magnus Vonsen
TABLE OF CONTENTS
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SPECIAL COLLECTIONS
Table of Contents
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Special Collections
American Mineralogist is an international journal that publishes mineralogical papers of broad interest to the geoscience and materials science community.