American Mineralogist

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Andreas Ertl, George R. Rossman, John M. Hughes, ... Katherine L. Smith, Karl R. Whittle,. Nestor J. Zaluzec ... Richard M. Thompson and Robert T. Downs.
(Contents continued from front cover)

92

Can electron energy-loss spectroscopy (EELS) be used to quantify hydrogen in minerals from the O K edge? Laurence A.J. Garvie

144 Density of dry peridotite magma at high pressure using an X-ray absorption method Tatsuya Sakamaki, Eiji Ohtani, Satoru Urakawa, Akio Suzuki, and Yoshinori Katayama

98

Texture analysis of a turbostratically disordered Ca-montmorillonite Luca Lutterotti, Marco Voltolini, Hans-Rudolf Wenk, Kaushik Bandyopadhyay, and Tiziana Vanorio

148 The crystal-structure and vacancy distribution in 6C pyrrhotite Johan P.R. de Villiers and David C. Liles

104 Packing systematics of the silica polymorphs: The role played by O-O nonbonded interactions in the compression of quartz Richard M. Thompson and Robert T. Downs 112 Calorimetric study of the surface energy of forsterite Shushu Chen and Alexandra Navrotsky

126 Semi-ordered crystalline structure of the Santa Olalla vermiculite inferred from X-ray powder diffraction Arancha Argüelles, Matteo Leoni, Jesús A. Blanco, and Celia Marcos

J

153 Thermal modification of hematite-ilmenite intergrowths in the Ecstall pluton, British Columbia, Canada Sarah J. Brownlee, Joshua M. Feinberg, Richard J. Harrison, Takeshi Kasama, Gary R. Scott, and Paul R. Renne

161 A new Al-rich hydroxylian pseudorutile from Kalimantan, Indonesia Ian E. Grey, Pierre Bordet, Nicholas C. Wilson, Raimunda Townend, Timothy J. Bastow, and Michela Brunelli 171 Lapeyreite, Cu3O[AsO3(OH)]2·0.75H2O, a new mineral: Its description and crystal structure Halil Sarp, Radovan Černý, Hakki Babalik, Murat Hatipoğlu, and Gilbert Mari

177 High P-T phase relation of magnesian (Mg0.7Fe0.3) staurolite compositon in the system FeO-MgOAl2O3-SiO2-H2O: Implications for prograde high-pressure history of ultrahigh-temperature metamorphic rocks 135 Stishovite single-crystal growth and application Kei Sato, M. Santosh, and Toshiaki Tsunogae to silicon self-diffusion measurements 185 Abbreviations for names of rock-forming Anton Shatskiy, Daisuke Yamazaki, minerals Yuriy M. Borzdov, Takuya Matsuzaki, Donna L. Whitney and Bernard W. Evans Konstantin D. Litasov, Titus Cooray, Anais Ferot, 204 neW mIneral nameS Eiji Ito, and Tomoo Katsura

Vol. 95, No. 1

An International Journal of Earth and Planetary Materials

January 2010 LEttErS 188 Hibonite-(Fe), (Fe,Mg)Al12O19, a new alteration mineral from the Allende meteorite Chi Ma

American Mineralogist

118 Crystallographic texture of the magnetite-hematite transformation: Evidence for topotactic relationships in natural samples from Quadrilátero Ferrífero, Brazil Paola Ferreira Barbosa and Leonardo Lagoeiro

10

192 Ion irradiation of the TiO2 polymorphs and cassiterite Gregory R. Lumpkin, Mark G. Blackford, Katherine L. Smith, Karl R. Whittle, Nestor J. Zaluzec, Edward A. Ryan, and Pete Baldo 196 Corundum + orthopyroxene ± spinel intergrowths in an ultrahigh-temperature Al-Mg granulite from the Southern Marginal Zone, Limpopo Belt, South Africa G.A. Belyanin, H.M. Rajesh, D.D. Van Reenen, and H. Mouri 200 Fe3+ spin transition in CaFe2O4 at high pressure Marco Merlini, Michael Hanfland, Mauro Gemmi, Simo Huotari, Laura Simonelli, and Pierre Strobel ArtIcLES 1

11

Vol.

95 Pages 1– 208

19

Metamorphic ultrahigh-pressure tourmaline: Structure, chemistry, and correlations to P-T conditions Andreas Ertl, Horst R. Marschall, Gerald Giester, Darrell J. Henry, Hans-Peter Schertl, Theodoros Ntaflos, George L. Luvizotto, Lutz Nasdala, and Ekkehart Tillmanns Slavikite—Revision of chemical composition and crystal structure Jan Parafiniuk, Łukasz Dobrzycki, and Krzysztof Woźniak

Anisotropic elasticity of jarosite: A high-P synchrotron XRD study Hongwu Xu, Yusheng Zhao, Jianzhong Zhang, Yuejian Wang, Donald D. Hickmott, Luke L. Daemen, Monika A. Hartl, and Liping Wang

AMMIAY 95(0001)1–208 ISSN 0003-004X (print) ISSN 1945-3027 (Online)

24

Tourmaline of the elbaite-schorl series from the Himalaya Mine, Mesa Grande, California: A detailed investigation Andreas Ertl, George R. Rossman, John M. Hughes, David London, Ying Wang, Julie A. O’Leary, M. Darby Dyar, Stefan Prowatke, Thomas Ludwig, and Ekkehart Tillmanns

41

Characterization of Al-Si ordering state in an alkali feldspar using atom location by channeling-enhanced microanalysis (ALCHEMI) Jun Wu and David R. Veblen

47

The relative stability of stoichiometrically related natural and synthetic double salts Claude H. Yoder, Naomi R. Gotlieb, and Anne L. Rowand

52

Free energy of formation of zircon based on solubility measurements at high temperature and pressure Robert C. Newton, Craig E. Manning, John M. Hanchar, and Clinton V. Colasanti

59

Structure refinement of a synthetic knorringite, Mg3(Cr0.8Mg0.1Si0.1)2(SiO4)3 Amélie Juhin, Guillaume Morin, Erik Elkaïm, Daniel J. Frost, Michel Fialin, Farid Juillot, and Georges Calas

64

A mineral tracer toward high-resolution dust provenance on the Chinese Loess Plateau: SEM, TEM, and sulfur isotopes of sulfate inclusions in biotite Gi Young Jeong and Kwang-Sik Lee

73

High-resolution TEM study of jimthompsonite, chesterite, and chain-width disorder in Archean ultramafic rocks from Isua, West Greenland Hiromi Konishi, Huifang Xu, and Robert F. Dymek

81

Retrograde hydration sequence in disordered Mg amphiboles: A TEM investigation Marco Ferrari and Cecilia Viti (Contents continued on outside back cover)

(Contents continued from front cover)

92

Can electron energy-loss spectroscopy (EELS) be used to quantify hydrogen in minerals from the O K edge? Laurence A.J. Garvie

144 Density of dry peridotite magma at high pressure using an X-ray absorption method Tatsuya Sakamaki, Eiji Ohtani, Satoru Urakawa, Akio Suzuki, and Yoshinori Katayama

98

Texture analysis of a turbostratically disordered Ca-montmorillonite Luca Lutterotti, Marco Voltolini, Hans-Rudolf Wenk, Kaushik Bandyopadhyay, and Tiziana Vanorio

148 The crystal-structure and vacancy distribution in 6C pyrrhotite Johan P.R. de Villiers and David C. Liles

104 Packing systematics of the silica polymorphs: The role played by O-O nonbonded interactions in the compression of quartz Richard M. Thompson and Robert T. Downs 112 Calorimetric study of the surface energy of forsterite Shushu Chen and Alexandra Navrotsky

126 Semi-ordered crystalline structure of the Santa Olalla vermiculite inferred from X-ray powder diffraction Arancha Argüelles, Matteo Leoni, Jesús A. Blanco, and Celia Marcos

J

153 Thermal modification of hematite-ilmenite intergrowths in the Ecstall pluton, British Columbia, Canada Sarah J. Brownlee, Joshua M. Feinberg, Richard J. Harrison, Takeshi Kasama, Gary R. Scott, and Paul R. Renne

161 A new Al-rich hydroxylian pseudorutile from Kalimantan, Indonesia Ian E. Grey, Pierre Bordet, Nicholas C. Wilson, Raimunda Townend, Timothy J. Bastow, and Michela Brunelli 171 Lapeyreite, Cu3O[AsO3(OH)]2·0.75H2O, a new mineral: Its description and crystal structure Halil Sarp, Radovan Černý, Hakki Babalik, Murat Hatipoğlu, and Gilbert Mari

177 High P-T phase relation of magnesian (Mg0.7Fe0.3) staurolite compositon in the system FeO-MgOAl2O3-SiO2-H2O: Implications for prograde high-pressure history of ultrahigh-temperature metamorphic rocks 135 Stishovite single-crystal growth and application Kei Sato, M. Santosh, and Toshiaki Tsunogae to silicon self-diffusion measurements 185 Abbreviations for names of rock-forming Anton Shatskiy, Daisuke Yamazaki, minerals Yuriy M. Borzdov, Takuya Matsuzaki, Donna L. Whitney and Bernard W. Evans Konstantin D. Litasov, Titus Cooray, Anais Ferot, 204 neW mIneral nameS Eiji Ito, and Tomoo Katsura

Vol. 95, No. 1

An International Journal of Earth and Planetary Materials

January 2010 LEttErS 188 Hibonite-(Fe), (Fe,Mg)Al12O19, a new alteration mineral from the Allende meteorite Chi Ma

American Mineralogist

118 Crystallographic texture of the magnetite-hematite transformation: Evidence for topotactic relationships in natural samples from Quadrilátero Ferrífero, Brazil Paola Ferreira Barbosa and Leonardo Lagoeiro

10

192 Ion irradiation of the TiO2 polymorphs and cassiterite Gregory R. Lumpkin, Mark G. Blackford, Katherine L. Smith, Karl R. Whittle, Nestor J. Zaluzec, Edward A. Ryan, and Pete Baldo 196 Corundum + orthopyroxene ± spinel intergrowths in an ultrahigh-temperature Al-Mg granulite from the Southern Marginal Zone, Limpopo Belt, South Africa G.A. Belyanin, H.M. Rajesh, D.D. Van Reenen, and H. Mouri 200 Fe3+ spin transition in CaFe2O4 at high pressure Marco Merlini, Michael Hanfland, Mauro Gemmi, Simo Huotari, Laura Simonelli, and Pierre Strobel ArtIcLES 1

11

Vol.

95 Pages 1– 208

19

Metamorphic ultrahigh-pressure tourmaline: Structure, chemistry, and correlations to P-T conditions Andreas Ertl, Horst R. Marschall, Gerald Giester, Darrell J. Henry, Hans-Peter Schertl, Theodoros Ntaflos, George L. Luvizotto, Lutz Nasdala, and Ekkehart Tillmanns Slavikite—Revision of chemical composition and crystal structure Jan Parafiniuk, Łukasz Dobrzycki, and Krzysztof Woźniak

Anisotropic elasticity of jarosite: A high-P synchrotron XRD study Hongwu Xu, Yusheng Zhao, Jianzhong Zhang, Yuejian Wang, Donald D. Hickmott, Luke L. Daemen, Monika A. Hartl, and Liping Wang

AMMIAY 95(0001)1–208 ISSN 0003-004X (print) ISSN 1945-3027 (Online)

24

Tourmaline of the elbaite-schorl series from the Himalaya Mine, Mesa Grande, California: A detailed investigation Andreas Ertl, George R. Rossman, John M. Hughes, David London, Ying Wang, Julie A. O’Leary, M. Darby Dyar, Stefan Prowatke, Thomas Ludwig, and Ekkehart Tillmanns

41

Characterization of Al-Si ordering state in an alkali feldspar using atom location by channeling-enhanced microanalysis (ALCHEMI) Jun Wu and David R. Veblen

47

The relative stability of stoichiometrically related natural and synthetic double salts Claude H. Yoder, Naomi R. Gotlieb, and Anne L. Rowand

52

Free energy of formation of zircon based on solubility measurements at high temperature and pressure Robert C. Newton, Craig E. Manning, John M. Hanchar, and Clinton V. Colasanti

59

Structure refinement of a synthetic knorringite, Mg3(Cr0.8Mg0.1Si0.1)2(SiO4)3 Amélie Juhin, Guillaume Morin, Erik Elkaïm, Daniel J. Frost, Michel Fialin, Farid Juillot, and Georges Calas

64

A mineral tracer toward high-resolution dust provenance on the Chinese Loess Plateau: SEM, TEM, and sulfur isotopes of sulfate inclusions in biotite Gi Young Jeong and Kwang-Sik Lee

73

High-resolution TEM study of jimthompsonite, chesterite, and chain-width disorder in Archean ultramafic rocks from Isua, West Greenland Hiromi Konishi, Huifang Xu, and Robert F. Dymek

81

Retrograde hydration sequence in disordered Mg amphiboles: A TEM investigation Marco Ferrari and Cecilia Viti (Contents continued on outside back cover)