American Mineralogist
REGULAR ARTICLE
411 On the triclinic manganiferous pyroxenes
430 The relations of the Grenville sediments and the Potsdam sandstone in eastern Ontario
437 Structures of some silicates
455 The chemical composition of roeblingite
461 Barite and witherite from near El Portal, Mariposa County, California
469 On the presence of beryllium in milarite
BOOK REVIEW
471 Books 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.