American Mineralogist
REGULAR ARTICLE
1 Structural relations among double oxides of trivalent elements
24 Unit cell of hydromagnesite
30 Study of orthopyroxenes from volcanic rocks
47 Smithsonite from Broken Hill Mine, Rhodesia
51 Calculation of polar and direct axial ratios and polar and direct axial angles of triclinic crystals from interfacial angles
63 Intertracial angles as indicators of optical and dimensional orientation of some monoclinic crystals in random sections
75 On clouded plagioclase
92 The distribution of aluminum in the tetrahedra of silicates and aluminates
97 Structural variations of some kaolinites in relation to dehydrated halloysite
109 Brannerite from California
118 Mineralogy of kaolin clays from Pugu, Tanganyika
140 Hydrothermal synthesis of andalusite
143 Cobalt in kimberlites
149 Graphical method for determining interplanar spacings
149 Illite in the Enfield shale from southern New York
NEW MINERAL NAMES
159 New mineral names
NOTES
145 Note on the variance of x-ray quartz-powder diffraction patterns
NOTES and NEWS
139 “Notes and news: A correction to the “”Reexamination of the crystal structure of melilite”””
BOOK REVIEW
152 Book reviews
TABLE OF CONTENTS
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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.
Special Collections
American Mineralogist is an international journal that publishes mineralogical papers of broad interest to the geoscience and materials science community.