LETTERS

Paul H. Warren
Extrapolated partial molar densities of SO₃, P₂O₅, and other oxides in silicate melts    1085
Full Text (344 K)

Laurence Galoisy, Georges Calas, Gordon E. Brown, Jr.
Intracrystalline distribution of Ni in San Carlos olivine: An EXAFS study   1089
Full Text (392 K)

ARTICLES

Dien Li, G. M. Bancroft, M. E. Fleet, P. C. Hess, Z. F. Yin
Coordination of B in K₂O-SiO₂-B₂O₃-P₂O₅ glasses using B K-edge XANES   873
Full Text (472 K)

Anna M. George, Jonathan F. Stebbins
High-temperature ²³Na MAS NMR data for albite: Comparison to chemical-shift models   878
Full Text (552 K)

Roberta L. Millard, Ronald C. Peterson, Brian K. Hunter
Study of the cubic to tetragonal transition in Mg₂TiO₄ and Zn₂TiO₄ spinels by ¹⁷O MAS NMR and Rietveld refinement of X-ray diffraction data   885
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Huifang Xu, David R. Veblen, Yiqiang Zhang
Structural modulation and phase transition in a Na-rich alkali feldspar   897
Full Text (1.3 MB)

Mario Tribaudino, Piera Benna, Emiliano Bruno
I1 - I 2/c phase transition in alkaline-earth feldspars: Evidence from TEM observations of Sr-rich feldspars along the CaAl₂Si₂O₈- SrAl₂Si₂O₈ join   907
Full Text (972 K)

Hexiong Yang, Marc M. Hirschmann
Crystal structure of P2₁/m ferromagnesian amphibole and the role of cation ordering and composition in the P2₁/m-C2/m transition in cummingtonite   916
Full Text (600 K)

M. Chiara Domeneghetti, G. Mario Molin, Marilena Stimpfl, Mario Tribaudino
Orthopyroxene from the Serra de Magé meteorite: Structure refinement and estimation of C2/c pyroxene contributions to apparent Pbca diffraction violations   923
Full Text (612 K)

Stephen B. Rice
Transmission electron microscope observations of planar defects in ferrierite from Kamloops Lake, British Columbia   930
Full Text (1.8 MB)

Robert T. Downs, Robert M. Hazen, Larry W. Finger, Tibor Gasparik
Crystal chemistry of lead aluminosilicate hollandite: A new high-pressure synthetic phase with octahedral Si   937
Full Text (432 K)

Tzy-Chung Wu, Andy H. Shen, Maura S. Weathers, William A. Bassett, I-Ming Chou
Anisotropic thermal expansion of calcite at high pressures: An in situ X-ray diffraction study in a hydrothermal diamond-anvil cell   941
Full Text (484 K)

Susan J. Gaffey
H₂O and OH in echinoid calcite: A spectroscopic study   947
Full Text (1.3 MB)

Alistair R. Lennie, Katharine E. R. England, David J. Vaughan
Transformation of synthetic mackinawite to hexagonal pyrrhotite: A kinetic study   960
Full Text (696 K)

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Dominique Lattard
Experimental evidence for the exsolution of ilmenite from titaniferous spinel   968
Full Text (1.3 MB)

John D. Clemens
Phlogopite stability in the silica-saturated portion of the system KAlO₂-MgO-SiO₂-H₂O: New data and a reappraisal of phase relations to 1.5 GPa   982
Full Text (1.5 MB)

Alison R. Pawley, Bernard J. Wood
The high-pressure stability of talc and 10 Å phase: Potential storage sites for H₂O in subduction zones   998
Full Text (604 K)

Martha L. Gerdes, Lukas P. Baumgartner, Mark Person, Douglas Rumble III
One- and two-dimensional models of fluid flow and stable isotope exchange at an outcrop in the Adamello contact aureole, Southern Alps, Italy   1004
Full Text (1.6 MB)

Kate Wright, Robert Freer, C. R. A. Catlow
Oxygen diffusion in grossular and some geological implications   1020
Full Text (568 K)

Theodore C. Labotka
Evidence for immiscibility in a Ti-rich garnet in calc-silicate hornfels from northeastern Minnesota   1026
Full Text (1 MB)

Stefano Salvi, Anthony E. Williams-Jones
Zirconosilicate phase relations in the Strange Lake (Lac Brisson) pluton, Quebec-Labrador, Canada   1031
Full Text (1.2 MB)

Shoji Arai, Natsue Abe
Reaction of orthopyroxene in peridotite xenoliths with alkali-basalt melt and its implication for genesis of alpine-type chromitite   1041
Full Text (792 K)

Aley El-Din K. EL-Shazly
On the thermodynamic data of kaolinite   1048
Full Text (564 K)
Deposit Item

P. Bonazzi, D. Borrini, F. Mazzi, F. Olmi
Crystal structure and twinning of Sb₂AsS₂, the synthetic analogue of pääkkönenite   1054
Full Text (460 K)

Joel D. Grice, Robert A. Gault, George Y. Chao
Reederite-(Y), a new sodium rare-earth carbonate mineral with a unique fluorosulfate anion   1059
Full Text (472 K)
Deposit Item

Dan Holtstam, Rolf Norrestam, Arne Sjödin
Plumboferrite: New mineralogical data and atomic arrangement   1065
Full Text (820 K)

NEW MINERAL NAMES    1073

John L. Jambor, Andrew C. Roberts
Full Text (464 K)

ERRATUM AND ADDENDUM    1078

Petrogenetic implications of the Fe3+ content of muscovite in pelitic schists, by C. V. Guidotti, M. G. Yates, M. D. Dyar, and M. E. Taylor (v. 79, p. 793-795, 1994).
Full Text (44 K)

MEMORIALS

Michael L. Williams
Memorial of Jeffrey A. Grambling, 1953-1993   1079
Full Text (280 K)

F. A. Frey, T. L. Grove
Memorial of Roger C. Burns, 1937-1994   1082
Full Text (356 K)