American Mineralogist

Volume 76, Issue no. 0304 : March - April 1991

LETTER

673 LETTERS MAS NMR spectroscopic study of Mg29SiO3 with the perovskite structure

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REGULAR ARTICLE

313 ARTICLES Static lattice energy minimization and lattice dynamics calculations on aluminosilicate minerals

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332 Substructure and superstructure of mullite by neutron diffraction

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343 The identification of naturally occurring TiO2 (B) by structure determination using high resolution electron microscopy, image simulation, and distance-least-squares refinement

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354 Hydroxyl groups in β-Mg2SiO4

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361 Water speciation in quartz: A near infrared study

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370 Alpha-decay damage in titanite

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397 Domain structure of low-symmetry vesuvianite from Crestmore, California

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405 High-temperature electrical measurements and thermodynamic properties of Fe3O4-FeCr2O4-MgCr2O4-FeAl2O4 spinels

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427 Internally consistent solution models for Fe-Mg-Mn-Ti oxides: Fe-Mg-Ti oxides and olivine

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445 Revised values for the thermodynamic properties of boehmite, AlO(OH), and related species and phases in the system Al-H-O

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458 Experimental determination of the pressure-temperature stability field and thermochemical properties of synthetic tremolite

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470 The effects of fluorine on the vapor-absent melting of phlogopite + quartz: Implications for deep-crustal processes

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477 Plagioclase-melt equilibria in hydrous systems

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493 Calcium depletion halos and Fe-Mn-Mg zoning around faceted plagioclase inclusions in garnet from a high-grade pelitic gneiss

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501 Mg- and Cr-rich staurolite and Cr-rich kyanite in high-pressure ultrabasic rocks (Cabo Ortegal, northwestern Spain)

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512 Garnet-clinopyroxene geobarometry: The problems, a prospect, and an approximate solution with some applications

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530 Hourglass inclusions: theory and application to the Bishop rhyolitic Tuff

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548 Magmatic processes in titanite-bearing dacites, central Andes of Chile and Bolivia

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561 Ti-rich chromite from the Mount Ayliff Intrusion, Transkei: Further evidence for high Ti tholeiitic magma

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574 Local equilibrium of mafic enclaves and granitoids of the Turtle pluton, southeast California: Mineral, chemical, and isotopic evidence

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589 Petrogenetic significance of zoned allanite in garnet amphibolites from a paleo-subduction zone: Catalina Schist, southern California

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602 Determination of the nonequilibrium ordering state in epidote from the ancient geothermal field of Saint Martin: Application of Mössbauer spectroscopy

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611 Experimental study of Li-rich granitic pegmatites: Part II. Spodumene + albite + quartz equilibrium

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617 Mineral reactions in closed systems involving amphibole and plagioclase

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628 Smectite-to-chlorite transformation in thermally metamorphosed volcanoclastic rocks in the Kamikita area, northern Honshu, Japan

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641 Characterization of some biogenic carbonates with Raman spectroscopy

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647 The crystal structure of amesite from Mount Sobotka: A nonstandard polytype

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653 Gillulyite, Tl2(As,Sb)8S13, a new thallium arsenic sulfosalt from the Mercur gold deposit, Utah

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657 Three-dimensional microscope image using anaglyphic filters: A new aid to fluid inclusion petrography

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659 Structural variation in the dolomite-ankerite solid-solution series: An X-ray, Mössbauer, and TEM study-Discussion

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661 Structural variation in the dolomite-ankerite solid-solution series: An X-ray, Mössbauer, and TEM study-Reply

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677 Precise determinations of the equilibria kyanite ⇔ sillimanite and kyanite ⇔ andalusite and a revised triple point for Al2SiO5 polymorphs

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681 Boron analysis by electron microprobe using MoB4C layered synthetic crystals

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NEW MINERAL NAMES

665 NEW MINERAL NAMES

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BOOK REVIEW

672 BOOK REVIEW

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SOFTWARE NOTICES

663 SOFTWARE NOTICE LCLSQ: Lattice parameter refinement using correction terms for systematic errors

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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.