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    • Article
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    Temperature Dependence of the Distribution Coefficient

    Kretz, Ralph
    Geological Magazine, 1963, Vol.100(2), pp.190-190 [Revue évaluée par les pairs]
    Cambridge University Press
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    Titre: Temperature Dependence of the Distribution Coefficient
    Auteur: Kretz, Ralph
    Echelle: 1963
    Sujet: Igneous And Metamorphic Petrology ; Distribution Coefficient ; Garnet-Biotite- Garnet-Horn-Blende ; Garnet-Biotite-Garnet- Horn-Blende ; Grade ; Metamorphic Rocks ; Metamorphism;
    Description: Relative to a paper by M. J. Frost on Fe-Mg distribution between coexisting garnet-biotite and garnet-hornblende, questions the treatment of the temperature dependence of the distribution coefficient.
    Précédemment: 196304
    Fait partie de: Geological Magazine, 1963, Vol.100(2), pp.190-190
    Classement: 196304
    Identifiant: 0016-7568 (ISSN); 1469-5081 (E-ISSN); 10.1017/S0016756800055412 (DOI)

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    Metamorphic crystallization

    Kretz, Ralph
    Chichester ; New York : J. Wiley & sons
    [1994]
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    Titre: Metamorphic crystallization / Ralph Kretz
    Auteur: Kretz, Ralph
    Editeur: Chichester ; New York : J. Wiley & sons
    Date: [1994]
    Collation: XIV, 507 p. : ill. ; 23 cm
    Sujet RERO: Cristallisation - Métamorphisme (géologie)
    Classification: LC QE475
    Identifiant: 0471942146 (ISBN); http://catalogue.bnf.fr/ark:/12148/cb374541934 (URN)
    No RERO: 2093725
    Permalien:
    http://data.rero.ch/01-2093725/html?view=FR_V1

    • Plusieurs versions

    Hydroelectricity: Environmental and Social Effects

    Kretz, Ralph
    Science, 13 December 1985, Vol.230(4731), pp.1223-1223 [Revue évaluée par les pairs]

    • Plusieurs versions

    Grain-Size Distribution for Certain Metamorphic Minerals in Relation to Nucleation and Growth

    Kretz, Ralph
    The Journal of Geology, 01 March 1966, Vol.74(2), pp.147-173 [Revue évaluée par les pairs]

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    Distribution of Mg, Fe +2 , and Mn in Some Calcic Pyroxene-Hornblende-Biotite-Garnet Gneisses and Amphibolites from the Grenville Province

    Kretz, Ralph
    The Journal of Geology, 01 September 1978, Vol.86(5), pp.599-619 [Revue évaluée par les pairs]
    The University of Chicago. All rights reserved.
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    Titre: Distribution of Mg, Fe +2 , and Mn in Some Calcic Pyroxene-Hornblende-Biotite-Garnet Gneisses and Amphibolites from the Grenville Province
    Auteur: Kretz, Ralph
    Description: Atomic absorption analyses of upper-amphibolite-facies minerals from a portion of the Grenville province have shown that the distribution of Mg, Fe, and Mn between calcic pyroxene (C) and hornblende (H) can be expressed by use of the following distribution equations and distribution coefficients \documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \usepackage{wasysym} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6} \begin{document}$$\frac{X^{{\mathrm{C}}}}{1-X^{{\mathrm{C}}}}\cdot\frac{1-X^{{\mathrm{H}}}}{X^{{\mathrm{H}}}}=1.7;\quad \frac{Y^{{\mathrm{C}}}}{Y^{{\mathrm{H}}}}=1.44$$\end{document} where X is $$Mg/(Mg + Fe^{+2})$$ and Y is $$Mn/(Mg + Fe^{+2} + Mn)$$ . These results, together with earlier spectrographic analyses of hornblende, biotite, and garnet from the same field area, produce the following distribution relationships, $$Mg/(Mg + Fe^{+2})$$ : \documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \usepackage{wasysym} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6} \begin{document}$${\mathrm{calcic\ pyroxene \stackrel{1.7}{>} hornblende \stackrel{1.0}{=} biotite \stackrel{5.0}{>} garnet}}$$\end{document} , $$Mn/(Mg + Fe^{+2} + Mn)$$ : \documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \usepackage{wasysym} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6} \begin{document}$${\mathrm{garnet \stackrel{6.4}{>} calcic\ pyroxene \stackrel{1.4}{>} hornblende \stackrel{1.3}{>} biotite}}$$\end{document} , where garnet contains about 20% grossularite and the numbers are distribution coefficients. Estimates of the within-crystal distribution of Mg and $$Fe^{+2}$$ in calcic pyroxene, hornblende, and biotite are combined with the above data on the between-crystal distribution of Mg and $$Fe^{+2}$$ to calculate the distribution of these two cations between all pairs of $$Mg - Fe^{+2}$$ sites in all combinations of the four minerals, calcic pyroxene, hornblende, biotite, and garnet. The results are as follows: $$Mg/(Mg + Fe^{+2})$$ : \documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \usepackage{wasysym} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6} \begin{document}$${\mathrm{M1\ calcic\ pyroxene \stackrel{1.0}{=} M2\ hornblende \stackrel{2.1}{>} (M1 + M3)\ biotite}}$$\end{document} \documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \usepackage{wasysym} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6} \begin{document}$$\stackrel{1.2}{>} {\mathrm{(M1 + M3)\ hornblende \stackrel{\sim5.0}{>} M2\ calcic\ pyroxene \stackrel{\sim1.0}{\approx}}}\ \{X\}\ {\mathrm{garnet}}$$\end{document} . Thus pairs of sites that are geometrically similar (M1 calcic pyroxene and M2 hornblende; M2 calcic pyroxene and {X} garnet) evidently have nearly identical $$Mg:Fe^{+2}$$ ratios.
    Fait partie de: The Journal of Geology, 01 September 1978, Vol.86(5), pp.599-619
    Identifiant: 00221376 (ISSN); 15375269 (E-ISSN); 10.1086/649727 (DOI)

    • Plusieurs versions

    Some Applications of Thermodynamics to Coexisting Minerals of Variable Composition. Examples: Orthopyroxene-Clinopyroxene and Orthopyroxene-Garnet

    Kretz, Ralph
    The Journal of Geology, 01 July 1961, Vol.69(4), pp.361-387 [Revue évaluée par les pairs]

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    Distribution of Mg, $Fe^{+2}$ , and Mn in Some Calcic Pyroxene-Hornblende-Biotite-Garnet Gneisses and Amphibolites from the Grenville Province

    Kretz, Ralph
    The Journal of Geology, 1 September 1978, Vol.86(5), pp.599-619 [Revue évaluée par les pairs]
    Archival Journals (JSTOR)
    Disponible
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    Titre: Distribution of Mg, $Fe^{+2}$ , and Mn in Some Calcic Pyroxene-Hornblende-Biotite-Garnet Gneisses and Amphibolites from the Grenville Province
    Auteur: Kretz, Ralph
    Sujet: Physical sciences -- Earth sciences -- Geology ; Physical sciences -- Earth sciences -- Geology ; Physical sciences -- Earth sciences -- Geology ; Physical sciences -- Earth sciences -- Geology ; Physical sciences -- Earth sciences -- Geology ; Mathematics -- Pure mathematics -- Algebra ; Physical sciences -- Earth sciences -- Geography ; Physical sciences -- Physics -- Condensed matter physics ; Physical sciences -- Chemistry -- Chemical elements ; Physical sciences -- Earth sciences -- Geology
    Description: Atomic absorption analyses of upper-amphibolite-facies minerals from a portion of the Grenville province have shown that the distribution of Mg, Fe, and Mn between calcic pyroxene (C) and hornblende (H) can be expressed by use of the following distribution equations and distribution coefficients $\frac{X^{C}}{1-X^{C}}\cdot\frac{1-X^{H}}{X^{H}}=1.7; \frac{Y^{C}}{Y^{H}}=1.44$ where X is $Mg/(Mg + Fe^{+2})$ and Y is $Mn/(Mg + Fe^{+2} + Mn)$ . These results, together with earlier spectrographic analyses of hornblende, biotite, and garnet from the same field area, produce the following distribution relationships, $Mg/(Mg + Fe^{+2})$ : calcic pyroxene $^{1.7}_{>}$ hornblende $^{1.0}_{=}$ biotite $^{5.0}_{>}$ garnet, $Mn/(Mg + Fe^{+2} + Mn)$ : garnet $^{6.4}_{>}$ calcic pyroxene $^{1.4}_{>}$ hornblende $^{1.3}_{>}$ biotite, where garnet contains about 20% grossularite and the numbers are distribution coefficients. Estimates of the within-crystal distribution of Mg and $Fe^{+2}$ in calcic pyroxene, hornblende, and biotite are combined with the above data on the between-crystal distribution of Mg and $Fe^{+2}$ to calculate the distribution of these two cations between all pairs of $Mg - Fe^{+2}$ sites in all combinations of the four minerals, calcic pyroxene, hornblende, biotite, and garnet. The results are as follows: $Mg/(Mg + Fe^{+2})$ : M1 calcic pyroxene $^{1.0}_{=} M2$ hornblende $^{2.1}_{>}$ (M1 + M3) biotite $^{1.2}_{>}$ (M1 + M3) hornblende $^{\sim5.0}_{>}$ M2 calcic pyroxene $^{\sim1.0}_{\approx}$ {X} garnet. Thus pairs of sites that are geometrically similar (M1 calcic pyroxene and M2 hornblende; M2 calcic pyroxene and {X} garnet) evidently have nearly identical $Mg:Fe^{+2}$ ratios.
    Fait partie de: The Journal of Geology, 1 September 1978, Vol.86(5), pp.599-619
    Identifiant: 00221376 (ISSN); 15375269 (E-ISSN)

    • Plusieurs versions

    Distribution of Magnesium and Iron between Orthopyroxene and Calcic Pyroxene in Natural Mineral Assemblages

    Kretz, Ralph
    The Journal of Geology, 01 November 1963, Vol.71(6), pp.773-785 [Revue évaluée par les pairs]
    The University of Chicago. All rights reserved.
    • Plusieurs versions

    Chemical Study of Garnet, Biotite, and Hornblende from Gneisses of Southwestern Quebec, with Emphasis on Distribution of Elements in Coexisting Minerals

    Kretz, Ralph
    The Journal of Geology, 01 July 1959, Vol.67(4), pp.371-402 [Revue évaluée par les pairs]

    • Plusieurs versions

    Metamorphic differentiation at Einasleigh, Northern Queensland

    Kretz, Ralph
    Journal of the Geological Society of Australia, 01 January 1966, Vol.13(2), pp.561-582
    Taylor & Francis (Taylor & Francis Group)