American Mineralogist
REGULAR ARTICLE
223 Geochemical evolution of topaz rhyolites from the Thomas Range and Spor Mountain, Utah
237 Kimberlitic chlorites from Sierra Leone, West Africa: unusual chemistries and structural polytypes
250 The greenschist-amphibolite transition in the CFM projection
252 Stacking disorder in clinochlore chlorite
264 The crystal structure of high clinoferrosilite
270 Lamellar structure of rhodonite and pyroxmangite intergrowths
277 On spinodal decomposition in Fe-free pyroxenes
283 The distribution of Mg and Fe2+ between olivine and spinel at 1300°C
292 The heat of fusion of fayalite
298 Entropies of kyanite, andalusite, and sillimanite: additional constraints on the pressure and temperature of the Al2SiO5 triple point
307 Heat capacity and thermodynamic functions for gehlenite and staurolite: with comments on the Schottky anomaly in the heat capacity of staurolite
319 The high temperature behavior of water and carbon dioxide in cordierite and beryl
328 Origin of optical variations in grossular-andradite garnet
339 Ferric iron in sapphirine: a Mössbauer spectroscopic study
349 Heat capacities and entropies of rhodochrosite (MnCO3) and siderite (FeCO3) between 5 and 600 K
358 Titanian taramellites in western North America
374 Tinsleyite, the aluminum analogue of leucophosphite, from the Tip Top pegmatite in South Dakota
377 Recovery of the original samarskite structure by heating in a reducing atmosphere
380 Sinkankasite, a new phosphate from the Barker pegmatite, South Dakota
383 Kaatialaite, a new ferric arsenate mineral from Finland
388 An unusual titanium-rich oxide mineral from Oslo, Norway
391 The jeweler’s refractometer as a mineralogical tool
399 Extinction angles for monoclinic amphiboles or pyroxenes: a cautionary note
404 A grinding/polishing tool to aid thin section preparation of small samples
NEW MINERAL NAMES
406 NEW MINERAL NAMES
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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.