American Mineralogist
REGULAR ARTICLE
1 Structural and chemical variations in pyroxenes
51 Metamorphic petrology, mineral equilibria, and polymetamorphism in the Augusta quadrangle, south-central Maine
70 Petrology of contact metamorphosed argillite from the Rove Formation, Gunflint Trail, Minnesota
87 High-grade metamorphic Archean banded iron-formations, Western Australia: assemblages with coexisting pyroxenes ± fayalite
100 Wonesite: a new rock-forming silicate from the Post Pond Volcanics, Vermont
106 The structural role of phosphorus in silicate melts
118 Raman study of crystalline polymorphs and glasses of spodumene composition quenched from various pressures
127 Exsolution relationships in a clinopyroxene of average composition Ca0.43Mn0.69Mg0.82Si2O6: X-ray diffraction and analytical electron microscopy
142 Twinning and superstructure of Al-rich mullite
148 The structure of bayldonite: chemical analysis, differential thermal analysis, and IR spectroscopy
154 The crystal structure of santaclaraite, CaMn4[Si5O14(OH)](OH) · H2O: the role of hydrogen atoms in the pyroxenoid structure
169 The crystal structure of a third polymorph of Cu5(PO4)2(OH)4
176 Polymorphism in Cu5(PO4)2(OH)4
182 Sterlinghillite, a new hydrated manganese arsenate mineral from Ogdensburg, New Jersey
185 A new cation ordering pattern in amesite-2H2
196 Effect of pressure on OH-stretching frequencies in kaolinite and ordered aluminous serpentine
201 Ajoite: new data
204 Regional variation in the cell dimensions of metamorphic quartz
213 Margarite pseudomorphs after kyanite in Glen Esk, Scotland
NEW MINERAL NAMES
217 NEW MINERAL NAMES
NOTES
222 NOTICES
BOOK REVIEW
221 BOOK REVIEWS
TABLE OF CONTENTS
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SPECIAL COLLECTIONS
Table of Contents
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Special Collections
American Mineralogist is an international journal that publishes mineralogical papers of broad interest to the geoscience and materials science community.