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American Mineralogist
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REGULAR ARTICLE
595 Origin of shapes of quartz sand grains
607 “Cryptomelane, a new name for the commonest of the “”psilomelane”” minerals”
611 The unit cell of cryptomelane
614 Composition, specific gravity and refractive indices of rhodochrosite; rhodochrosite from Butte, Montana
629 Magnetic separations in petrography
638 Zoisite-prehnite alteration of gabbro
646 Idiomorphic cordierite from Safe Harbor, Pennsylvania
649 An unusual asymmetrically banded fissure vein: A discussion
652 Fellowships available in mineralogy and structural crystallography; Nominations for officers of the Mineralogical Society of America for 1943; Announcement of annual meeting
653 Discredited minerals
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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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Special Collections
American Mineralogist is an international journal that publishes mineralogical papers of broad interest to the geoscience and materials science community.