American Mineralogist
REGULAR ARTICLE
487 An improved heating and circulating system to use in double-variation procedure
493 Differential thermal curves of prepared mixtures of clay minerals
502 Graphical derivation of the refractive index ε for the trigonal carbonates
508 Quantitative mineral analysis with a recording x-ray diffraction spectrometer
518 Triplite crystals from Colorado
527 Optical figures obtained with the reflecting microscope
547 Pumice from Haylmore, Bridge River, British Columbia
553 Nickelian epsomite from north Auckland, New Zealand
561 Charts for correlation of optical properties with chemical composition of some common rock-forming minerals
574 Phosphate minerals in the Castle Dome copper deposit, Arizona
583 Twinned pseudomorphs after pyrite from King’s Butte, Greene County, Missouri
585 Polycrase in New York State
588 Demonstration of interference figures
589 Preservation of specimens of marcasite and pyrite
NOTES
590 Note on the anomalous thermal effect in quartz oscillator-plates
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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.
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American Mineralogist is an international journal that publishes mineralogical papers of broad interest to the geoscience and materials science community.