American Mineralogist

Volume 25, Issue no. 10 : October 1940

REGULAR ARTICLE

627 Cascade andesites of Oregon

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666 Dehydration of pollucite

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673 On the origin of some pegmatites in the town of Newry, Maine

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689 Use of the Wulff net in mineral determination with the universal stage

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708 A new occurrence of dioptase in Arizona

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NEW MINERAL NAMES

710 New mineral names

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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.