American Mineralogist, 2006, V 91, N 10, October.

LETTERS
 
1703
Rietveld structure refinement of perovskite 
and post-perovskite phases of NaMgF3 
(Neighborite) at high pressures 
C. David Martin, Wilson A. Crichton, 
Haozhe Liu, Vitali Prakapenka, Jiuhua Chen, 
and John B. Parise 

1707
Si vacancies in the 10-? phase 
M.D. Welch, A.R. Pawley, S.E. Ashbrook, 
H.E. Mason, and B.L. Phillips 
 
PLANETARY MATERIALS: FROM THE EARTH TO THE MOON AND BEYOND 
  
1459
Preface to the Jim Papike special issue 
Charles Shearer, David Vaniman, and Ted Labotka 

1461
Orbicular oxides in carbonatitic kimberlites 
Stephen E. Haggerty and Agnes Fung 

1473
Fluid-mediated polymetamorphism related to 
Proterozoic collision of Archean Wyoming 
and Superior provinces in the Black Hills,
South Dakota 
Peter I. Nabelek, Theodore C. Labotka,
Thomas Helms, and Max Wilke 

1488
Lithium isotopic systematics of granites 
and pegmatites from the Black Hills, South Dakota 
Fang-Zhen Teng, William F. McDonough, 
Roberta L. Rudnick, Richard J. Walker, 
and Mona-Liza C. Sirbescu 

1499
Identifying the effects of petrologic 
processes in a closed basaltic system 
using trace-element concentrations in 
olivines and glasses: Implications 
for comparative planetology 
Justin J. Hagerty, Charles K. Shearer, 
David T. Vaniman, and Paul V. Burger 

1509
Tectonic implications of diverse igneous 
blocks in Franciscan melange, 
Northern California and southwestern Oregon 
Glenn J. MacPherson, Mario J. Giaramita, 
and Stephen Paul Phipps 

1521
The petrogenesis of the Apollo 14 high-Al mare basalts 
Clive R. Neal and Georgiana Y. Kramer 

1536
Experimental insights on crystal chemistry 
of high-Ti garnets from garnet-melt 
partitioning of rare-earth and 
high-field-strength elements 
Rachel E. Dwarzski, David S. Draper, 
Charles K. Shearer, and Carl B. Agee 

1547
The atomic arrangement of merrillite from 
the Fra Mauro Formation, Apollo 14 
lunar mission: The first structure 
of merrillite from the Moon 
John M. Hughes, Bradley L. Jolliff, 
and Mickey E. Gunter 

1553
The behavior of Li and B in lunar mare 
basalts during crystallization, shock, 
and thermal metamorphism: Implications 
for volatile element contents of martian basalts 
J. Chaklader, C.K. Shearer, and L.E. Borg 

1565
Pyroxene europium valence oxybarometer: 
Effects of pyroxene composition, melt 
composition, and crystallization kinetics 
C.K. Shearer, J.J. Papike, and J.M. Karner 

1574
Comparative planetary mineralogy: 
Pyroxene major- and minor-element 
chemistry and partitioning of vanadium 
between pyroxene and melt in planetary basalts 
Jim Karner, J.J. Papike, and C.K. Shearer 

1583
Crystal chemistry of lunar merrillite and 
comparison to other meteoritic and planetary 
suites of whitlockite and merrillite 
Bradley L. Jolliff, John M. Hughes, 
John J. Freeman, and Ryan A. Zeigler 

1596
An experimental study of trace-element 
partitioning between Ti-Al-clinopyroxene
and melt: Equilibrium and kinetic effects 
including sector zoning 
Gary E. Lofgren, Gary R. Huss, 
and G.J. Wasserburg 

1607
Minor- and trace-element sector zoning 
in synthetic enstatite 
Craig S. Schwandt and Gordon A. McKay 

1616
Insights into the redox history of the 
NWA 1068/1110 martian basalt from mineral 
equilibria and vanadium oxybarometry 
Christopher D.K. Herd 

1628
Transformations of Mg- and Ca-sulfate 
hydrates in Mars regolith 
David T. Vaniman and Steve J. Chipera 

1643
An experimental study of the oxidation 
state of vanadium in spinel and basaltic 
melt with implications for the origin of 
planetary basalt 
K. Righter, S.R. Sutton, M. Newville, 
L. Le, C.S Schwandt, H. Uchida, B. Lavina, 
and R.T. Downs 

1657
Valence state partitioning of vanadium 
between olivine-liquid: Estimates of 
the oxygen fugacity of Y980459 and 
application to other olivine-phyric martian basalts 
C.K. Shearer, G. McKay, J.J. Papike, 
and J.M. Karner 

1664
Identifi cation of relict forsterite grains 
in forsterite-rich chondrules from the 
Mokoia CV3 carbonaceous chondrite 
Rhian H. Jones and E. Rae Carey 

1675
Formation of spinel-, hibonite-rich 
inclusions found in CM2 carbonaceous chondrites 
Steven B. Simon, Lawrence Grossman, 
Ian D. Hutcheon, Douglas L. Phinney, 
Peter K. Weber, and Stewart J. Fallon 

1688
Deep metastable eutectic condensation in 
Al-Fe-SiO-H2-O2 vapors: Implications for
natural Fe-aluminosilicates 
Frans J.M. Rietmeijer, Joseph A. Nuth, 
Pierre Rochette, Jannie Marfaing, 
Aurora Pun, and James M. Karner 

ARTICLES
 
  
1699
a-PbO2-type nanophase of TiO2 from 
coesite–bearing eclogite in the 
Dabie Mountains, China—Comment 
Jing Chen and Zhendong Fu 

1701
a-PbO2-type nanophase of TiO2 from 
coesite–bearing eclogite in the 
Dabie Mountains, China—Reply 
Xiuling Wu, Dawei Meng, Yujing Han 

PRESENTATION OF THE DANA MEDAL 2006 
  
1711
Presentation of the Mineralogical 
Society of America Dana Medal 
for 2006 to Rodney C. Ewing 
Alexandra Navrotsky 

1712
Acceptance of the Dana Medal of 
the Mineralogical Society of 
America for 2006 
Rodney C. Ewing 

1714
BOOK REVIEW 
Melissa Fittipaldo 
ELECTRON MICROPROBE ANALYSIS 
AND SCANNING ELECTRON MICROSCOPY 
IN GEOLOGY (2nd ed.) by 
S.J.B. Reed, Cambridge 
University Press, August 
2005. 206 pages