American Mineralogist

Volume 66, Issue no. 1112 : November - December 1981

REGULAR ARTICLE

1107 Hydrous pyriboles and sheet silicates in pyroxenes and uralites: intergrowth microstructures and reaction mechanisms

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1135 Devolatilization equilibria in H2O-CO2 and H2O-CO2-NaCl fluids: an experimental and thermodynamic evaluation at elevated pressures and temperatures

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1154 Petrologic and crystal-chemical significance of some deep-seated phlogopites

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1164 Influence of CO2 on melting of model granulite facies assemblages: a model for the genesis of charnockites

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1175 The formation of pigeonite on the join hedenbergite-ferrosilite at 11.5 and 15 kbar: experiments and a solution model

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1183 The join CaAl2Si2O8-H2O (anorthite-water) at elevated pressures and temperatures

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1189 A solution model for coexisting iron-titanium oxides

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1202 Heat capacities of the alkali feldspars between 350 and 1000 K from differential scanning calorimetry, the thermodynamic functions of the alkali feldspars from 298.15 to 1400 K, and the reaction quartz + jadeite = analbite

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1216 Interlayer bonding in IIb chlorite

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1221 Cation ordering in lepidolite

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1233 Olivine orientation in the ALHA77005 achondrite

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1237 A molecular orbital study of rings in silicates and siloxanes

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1250 Electronic structure of thiospinel minerals: results from MO calculations

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1258 Iron content of pyrrhotites produced in continuous liquefaction units

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1263 Dixenite, Cu1+Mn2+14Fe3+(OH)6(As3+O3)5(Si4+O4)2(As5+O4): metallic [As3+4Cu1+] clusters in an oxide matrix

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NEW MINERAL NAMES

1254 New observations on natural pyrrhotites: magnetic transition in hexagonal pyrrhotite

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1274 NEW MINERAL NAMES

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ERRATA

1281 ERRATA

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INDEX

1282 INDEX

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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.