American Mineralogist
REGULAR ARTICLE
577 PART 1: HIGH TEMPERATURE CRYSTAL CHEMISTRY High-temperature crystal chemistry of hortonolite
588 The crystal structures of forsterite and hortonolite at several temperatures up to 900°C
594 High-temperature crystal chemistry of acmite, diopside, hedenbergite, jadeite, spodumene, and ureyite
619 Delineation of the one atmosphere augite-pigeonite miscibility gap for pyroxenes from lunar basalt 12021
636 An orthopyroxene structure up to 850°C
649 The high temperature crystal chemistry of tremolite
665 The anorthite crystal structure at 410 and 830°C
676 High-temperature, single-crystal X-ray study of natrolite
681 The crystal structure of beta eucryptite as a function of temperature
691 Crystal-structure refinement of cubic boracite
698 A new single-crystal heater for the precession camera and four-circle diffractometer
705 PART II Composition and structural state of K-feldspars from K-feldspar + sillimanite grade rocks in northwestern Maine
717 Wood opal-A tridymite-like mineral
721 Al-rich pargasite
727 The toughness of jade
733 Nickel minerals from Barberton, South Africa: VI. Liebenbergite, a nickel olivine
736 Crystal chemistry of the system Na2SO4-K2SO4-K2CrO4-Na2CrO4 and of the glaserite phase
748 Structural dependence of quadrupole coupling constant e2qQ/h for 27Al and crystal field parameter D for Fe3+ in aluminosilicates
756 Effect of variations in O-P-O and P-O-P angles on P-O bond overlap populations for some selected ortho- and pyrophosphates
765 Molecular orbital calculations on beryllium and boron oxyanions: Interpretation of X-ray emission, ESCA, and NQR spectra and of the geochemistry of beryllium and boron
771 Drift of Pt/Pt10Rh and W3Re/W25Re thermocouples in single stage piston-cylinder apparatus
778 Gaylussite: Thermal properties by simultaneous thermal analysis
785 Stability of the assemblage muscovite-calcite-quartz
794 Hematite to goethite surface weathering. Scanning electron microscopy
796 Determination of the high-low inversion in berlinite (AlPO4) to 6 kbar
799 The crystal structure of hanksite
802 Myrmekites from the Haast Schists, New Zealand: A discussion
804 Myrmekites from the Haast Schists, New Zealand: A reply
NEW MINERAL NAMES
805 NEW MINERAL NAMES
MINERALOGICAL NOTES
792 “MINERALOGICAL NOTES X-ray “”powder”” data for chalcophyllite”
NOTES
810 NOTICE
BOOK REVIEW
808 BOOK REVIEWS
PROCEEDINGS
811 LIST OF OFFICERS AND COMMITTEES
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.