American Mineralogist, 2001, V 86, N 11-12, November-December.

LETTERS 

1525
Elasticity of single-crystal calcite and rhodochrosite by Brillouin spectroscopy 
Chien-Chih Chen, Chung-Cherng Lin, Lin-Gun Liu, Stanislav V. Sinogeikin, and Jay D. Bass 

1530
Ikaite, CaCO3·6H2O: Cold comfort for glendonites as paleothermometers
Ian P. Swainson and Robert P. Hammond 

ARTICLES 

1321
First-principles modeling of the infrared spectrum of kaolinite 
Etienne Balan, A. Marco Saitta, Francesco Mauri, and Georges Calas 

1331
Determination of the limiting fictive temperature of silicate glasses from 
calorimetric and dilatometric methods: Application to low-temperature liquid 
volume measurements 
Jean A. Tangeman and Rebecca A. Lange 

1345
Enthalpies of formation of tremolite and talc by high-temperature solution 
calorimetry a consistent picture 
Wolf-Achim Kahl and Walter V. Maresch 

1358
Evidence for an  I2/a to  Imab phase transition in the silica polymorph moganite 
at ~570 K 
Peter J. Heaney and Jeffrey E. Post

1367
Thermal decomposition of rhombohedral KClO3 from 29-76 kilobars and implications 
for the molar volume of fluid oxygen at high pressures 
Marie C. Johnson, David Walker, Simon M. Clark, and Raymond L. Jones 

1380
High-pressure behavior of clinochlore 
Mark D. Welch and William G. Marshall 

1387
Structure and elasticity of wadsleyite at high pressures 
B. Kiefer, L. Stixrude, J. Hafner, and G. Kresse 

1396
Determination of the fluid-absent solidus and supersolidus phase relationships 
of MORB-derived amphibolites in the range 414 kbar 
Susana Lopez and Antonio Castro 

1404
F-rich phlogopite stability in ultra-high-temperature metapelites from the 
Napier Complex, East Antarctica 
Y. Motoyoshi and B.J. Hensen 

1414
Instability of Al2SiO5 "triple-point" assemblages in muscovite+biotite+quartz-
bearing metapelites, with implications 
David R.M. Pattison 

1423
Stability of osumilite coexisting with spinel solid solution in metapelitic 
granulites at high oxygen fugacity 
Kaushik Das, Somnath Dasgupta, and Hiroyuki Miura

1435
Geikielite exsolution in spinel 
Eric Reusser, Reto Giere, and Gregory R. Lumpkin 

1447
Aeromagnetic anomalies, magnetic petrology and rock magnetism of hemo-ilmenite- 
and magnetite-rich cumulate rocks from the Sokndal Region, South Rogaland, Norway 
Peter Robinson, Peter T. Panish, and Suzanne A. McEnroe 

1469
Minor element chemistry of hemo-ilmenite and magnetite in cumulate rocks from 
the Sokndal Region, South Rogaland, Norway 
Peter Robinson, Peter T. Panish, and Suzanne A. McEnroe 

1477
Crystal structure analysis of synthetic Ca4Fe1.5Al17.67O32: A high-pressure, 
spinel-related phase 
V. Kahlenberg, C.S.J. Shaw, and J.B. Parise 

1483
Crystal structure of phase X, a high pressure alkali-rich hydrous silicate and 
its anhydrous equivalent 
Hexiong Yang, Jurgen Konzett, and Charles T. Prewitt 

1489
Fluoro-edenite from Biancavilla (Catania, Sicily, Italy): Crystal chemistry of a 
new amphibole end-member 
Antonio Gianfagna and Roberta Oberti

1494
Description and crystal structure of turtmannite, a new mineral with a 68A 
period related to mcgovernite 
Joel Brugger, Thomas Armbruster, Nicolas Meisser, Clivia Hejny, and Bernard Grobety 

1506
The crystal structure of low melanophlogite 
Takeshi Nakagawa, Kuniaki Kihara, and Kazuo Harada 

1513
Crystal structures of Na and K aluminate mullites 
Reinhard X. Fischer, Martin Schmucker, Paul Angerer, and Hartmut Schneider 

1519
From mastodon ivory to gemstone: The origin of turquoise color in odontolite 
Ina Reiche, Colette Vignaud, Bernard Champagnon, Gerard Panczer, Christian 
Brouder, Guillaume Morin, Vicente Armando Sole, Laurent Charlet, and Michel Menu 

1534
NEW MINERAL NAMES 

1538
AUTHOR INDEX 

1545
SUBJECT INDEX