American Mineralogist

Volume 12, Issue no. 04 : April 1927

REGULAR ARTICLE

99 Crystallography of azurite from Tsumeb, Southwest Africa, and the axial ratio of azurite

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144 Holdenite, a new arsenate of manganese and zinc, from Franklin, New Jersey

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149 Cahnite, a new boro-arsenate of calcium from Franklin, New Jersey

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154 A saw attachment adapting Goldschmidt’s model cutting machine to the sawing of wooden models

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157 Alpine mineral deposits

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168 The optical properties of zincite from Franklin, New Jersey

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170 Graftonite from a new locality in New Hampshire

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173 Topaz and phenacite from Baldface Mountain, Chatham, New Hampshire

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180 Crystallographic notes: 1. Phosphophyllite; 2. Hematite; 3. Willemite; 4. Hedyphane

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188 The occurrence of cinnabar in Dutch Guiana

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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.