American Mineralogist
REGULAR ARTICLE
227 The elementary course in a changing mineralogy
242 Ixiolite and other polymorphic types of FeNbO4
247 Heating oscillating x-ray diffraction studies of some organo-montmorillonites
258 Volatiles in volcanic glasses and their stability relations
272 Rapid, quantitative illite determination in polycomponent mixtures
277 Crystallographic implications of EPR in neutron-irradiated diamond
286 Extinction measurements for the determination of 2V with the universal stage
297 The genesis of plagioclase twinning in the Nonewaug granite
321 On the distribution of minor components during the formation of minerals
325 Empressite and stuetzite redefined
339 Electron optical observations of fine-grained silica minerals
348 Crystalline solubility in the muscovite and phlogopite groups
363 The nature of alkali carbonate apatites
377 Leucophosphite, a new occurrence in the Quadrilitero Ferrifero, Minas Gerais, Brazil
387 Some effects of pressure on the thermoluminescence of amblygonite, pectolite, orthoclase, scapolite and wollastonite
398 Lithian hureaulite from the Black Hills
406 Use of the Nakamura plate in universal stage orientations
408 Iriginite from South Dakota
414 A stereographic net mounted on a phonograph
415 Morphological analysis of hodgkinsonite
420 A chrome-nickel Pennine from serpentinite, Jambur chromite mines, Mysore State, India
424 On the occurrence of asbestos in Chamoli, U. P., India
427 Ordering of Fe and Cr in chrysoberyl
435 “Discussion of “”Cleavage in Quartz”” by F. D. Bless and G. V. Gibbs”
436 “Reply to “”Discussion of ‘Cleavage in Quartz’ “””
487 Constitution and By-Laws of the Mineralogical Society of America
490 Directory of Fellows and Members of the Mineralogical Society of America
AWARD
453 Awards
NEW MINERAL NAMES
439 New Mineral Names
MINERALOGICAL NOTES
395 MINERALOGICAL NOTES: Crystallography of fahevite, Sapucaia pegmatite mine, Minas Gerais, Brazil
NOTES
430 Notes on western mineral occurrences; 3, Thulite from Camp Creek, Ruby Mountains, Montana; 4, Hypersthene veinlets, Timber Gulch, Ruby Mountains, Montana
BOOK REVIEW
449 Book Reviews
PROCEEDINGS
469 Proceedings of the forty-fourth annual meeting of the Mineralogical Society of America at New York, New York
MEMORIAL
464 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.