American Mineralogist

Volume 5, Issue no. 04 : April 1920

REGULAR ARTICLE

67 The gnomonic projection

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80 Thaumasite (and spurrite) from Crestmore, California

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82 The old lithia mine in Chatham, Connecticut

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NEW MINERAL NAMES, NOTES, NEWS and PROCEEDINGS

84 Notes and news, proceedings of societies, and new minerals

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85 Notes and news, proceedings of societies, and new minerals

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86 Notes and news, proceedings of societies, and new minerals

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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.