American Mineralogist
REGULAR ARTICLE
1571 Smythite, (Fe,Ni)9S11 – A redefinition
1578 Correlations between Si-O bond length, Si-O-Si angle and bond overlap populations calculated using extended Huckel molecular orbital theory
1614 The effect of tetrahedral angles on Si-O bond overlap populations for isolated tetrahedra
1643 Variation of Si-O distances in olivines, soda melilite and sodium metasilicate as predicted by semi-empirical molecular orbital calculations
1664 Microstructural investigation of ballas diamond
1681 Crystallographic study of rashleighite a member of the turquoise group
1692 Interpretation of the spin-allowed bands of Fe2+ in silicate garnets
1711 Refinement of the crystal structure of a volcanic nepheline
1720 Crystal structure of a rubidium iron feldspar
1729 Spinels and the petrogenesis of some Apollo 12 igneous rocks
1748 Composition of perovskite in kimberlite
1754 The heat capacities at low temperatures and entropies at 298.15K of huntite, CaMg3(CO3)4, and artinite Mg2(OH)2CO3·3H2O
1768 The heat capacities at low-temperatures and entropies at 298.15K of nesquehonite, MgCO3·3H2O, and hydromagnesite
1782 Retrieval of thermodynamic data from a study of inter-crystalline and intracrystalline ion-exchange equilibrium
1801 Leucosphenite, and its occurrence in the Green River formation of Utah and Wyoming
1823 Cation exchange selectivity in mica and vermiculite
1832 Cation and layer charge effects on blister-like osmotic swelling of micaceous vermiculite
1849 Laboratory dissolution of plagioclase feldspars in water and organic acids at room temperature
1860 Chemical changes in plagioclases and their bearing on the petrologic history of an amphibolite body
1873 Crystallography of a high-temperature phase of realgar
1880 The crystal structure of tilasite
1884 Development of (120) prism faces of natural topaz
1889 Tremolite with high richterite-molecule content in kimberlite from Buell Park, Arizona
1894 Phase stability in the ThGeO4 system over the range 750-1450°C at 1 atm
1899 Use of mercuric bromide as a heavy liquid
1902 The effect of reduced water fugacity on the buffering of oxygen fugacity, in hydrothermal experiments
NEW MINERAL NAMES
1876 New observations on natural pyrrhotites: Part II. Laminar magnetite in monoclinic pyrrhotite
1909 New Mineral Names
MINERALOGICAL NOTES
1871 MINERALOGICAL NOTES A repeated twin in natural diamond from Tortiya, Ivory Coast
BOOK REVIEW
1915 Book Reviews
INDEX
1926 Index to Volume 57
TABLE OF CONTENTS
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SPECIAL COLLECTIONS
Table of Contents
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American Mineralogist is an international journal that publishes mineralogical papers of broad interest to the geoscience and materials science community.