American

Mineralogist

1995, Volume 80, January-February, number 1-2

LETTER

Page

197

G. Artioli, R. Rinaldi, C. C. Wilson, P. F. Zanazzi: High-temperature Fe-Mg cation partitioning in olivine: In-situ single-crystal neutron diffraction study

ARTICLES

1

Catherine A. McCammon: Equation of state, bonding character, and phase transition of cubanite, CuFe2S3, studied from 0 to 5 GPa

9

Hexiong Yang, Subrata Ghose: A transitional structural state and anomalous Fe-Mg order-disorder in Mg-rich orthopyroxene, (Mg0.75Fe0.25)2Si2O6

21

Yunxiang Ni, John M. Hughes, Anthony N. Mariano: Crystal chemistry of the monazite and xenotime structures

27

Andrew Locock, Robert W. Luth, Ronald G. Cavell, Dorian G. W. Smith, M. John M. Duke: Spectroscopy of the cation distribution in the schorlomite species of garnet

39

Peter J. Dirken, Arno P. M. Kentgens, Gerda H. Nachtegaal, Ad M. J. Van Der Eerden, J. Ben H. Jansen: Solid-state MAS NMR study of pentameric aluminosilicate groups with 1800 intertetrahedral Al-O-Si angles in zunyite and harkerite

46

J. Stephen Huebner, Roberta G. Dillenburg: Impedance spectra of hot, dry silicate minerals and rock: Qualitative interpretation of spectra

65

Sturges W. Bailey, Jillian F. Banfield, William W. Barker, George Katchan: Dozyite, a 1:1 regular interstratification of serpentine and chlorite

78

Bernardo Cesare, Bernard Grobety: Epitaxial replacement of kyanite by staurolite: A TEM study of the microstructures

87

Huifang Xu, David R. Veblen: Transmission electron microscopy study of optically an isotropic and isotropic hauyne

94

Francois Holtz, Harald Behrens, Donald B. Dingwell, Wilhelm Johannes: H20 solubility in haplogranitic melts: Compositional, pressure, and temperature dependence

109

Jeffrey M. Rosenbaum, Matthew M. Slagel: C-O-H speciation in piston-cylinder experiments

115

Allan H. Treiman: Ca-rich carbonate melts: A regular-solution model, with applications to carbonatite magma + vapor equilibria and carbonate lavas on Venus

131

Cherith M. R. Letargo, William M. Lamb, Jong-Sim Park: Comparison of calcite + dolomite thermometry and carbonate + silicate equilibria: Constraints on the conditions of metamorphism of the Llano uplift, central Texas, U.S.A. Supplemental Data Available

144

Brent E. Owens, Robert F. Dymek: Significance of pyroxene megacrysts for massif anorthosite petrogenesis: Constraints from the Labrieville, Quebec, pluton

162

Bernard E. Lefake, Colin M. Farrow, Roger Townend: K-poor titanian fluor-richterite from near Nullagine, Western Australia

165

Frank C. Hawthorne, Roberta Oberti, Elio Cannillo, Nicola Sardone, Alberto Zanetti, Joel D. Grice, Paul M. Ashley: A new anhydrous amphibole from the Hoskins mine, Grenfell, New South Wales, Australia: Description and crystal structure of ungarettiite, NaNa2[Mn2(2+)Mn3(3+)]Si8O22O2

173

Vongshan Dal, Jeffrey E. Post, Daniel E. Appleman: Crystal structure of minehillite: Twinning and structural relationships to reyerite

179

Anthony R. Kampf, Eugene E. Foord: Artroeite, PbAlF3(OH)2, a new mineral from the Grand Reef mine, Graham County, Arizona: Description and crystal structure

184

NEW MINERAL NAMES

MEMORIALS

189

Peter H. Nixon: Memorial of Oleg von Knorring, 1915-1994

191

William E. Benson, Charles B. Sclar: Memorial of Alvin Van Valkenburg, Jr., 1913-1991

194

S. W. Bailey: Memorial of Richard Conrad Emmons, 1898-1993

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