American Mineralogist
REGULAR ARTICLE
227 State mineralogy: Why, whence and whither
241 Polymorphism in alkali amphiboles
261 The crystal structure of a hexamethylenediamine-vermiculite complex
271 Co-Ni-Fe diarsenides: Compositions and cell dimensions
300 Thermocrystallization of richellite to produce a lazulite structure (calcium lipscombite)
308 Errors in the measurement of 2V with the universal stage
324 Artificial crystallization of volcanic glass to carnegieite, nepheline and albite at room pressure
340 A semimicroprocedure for the determination of ferrous iron in nonrefractory silicate minerals
348 The cell dimensions and symmetry of layer-lattice silicates. V. Composition limits
368 The cell dimensions and symmetry of layer-lattice silicates. VI. Serpentine and kaolin morphology
379 The determination of platinum metals in siderite meteorites
390 Structural aspects of kaolinite using infrared absorption
404 X-ray crystallography of wegscheiderite (Na2CO3·3NaHCO3)
406 A rapid change rotating sample holder for x-ray diffraction of powders
410 Mineralogical evidence for the penecontemporaneous lateritization of the basalts from New England, N. S. W.
414 Cell dimensions of dehydrated natrolite
418 Two devices for rapid measurement and comparison of x-ray powder patterns
421 Crystals of rammelsbergite and algodonite
422 On the microscopic determination of the amphiboles in grains
429 Dimorphic relation in Ag3SbS3
AWARD
443 Awards
NEW MINERAL NAMES
433 New Mineral Names
MINERALOGICAL NOTES
400 MINERALOGICAL NOTES: Wegscheiderite (Na2CO3·3NaHCO3), a new saline mineral from the Green River formation, Wyoming
NOTES
441 Notices
BOOK REVIEW
437 Book Reviews
PROCEEDINGS
465 Proceedings of the forty-third annual meeting of the Mineralogical Society of America at Houston, Texas
MEMORIAL
454 Memorials
TABLE OF CONTENTS
&
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.