Zobrazeno 1 - 10 of 11 pro vyhledávání: '"C. V. Guidotti"'
1
Single-crystal X-ray studies of trioctahedral micas coexisting with dioctahedral micas in metamorphic sequences from western Maine
Autor: Daniele Malferrari, C. V. Guidotti, Francesco P. Sassi, Maria Franca Brigatti
Publikováno v: American Mineralogist. 93:396-408
A crystal-chemical study of thirteen biotite (twelve of 1 M polytype and one of 2 M 1 polytype) and four muscovite samples was made. The biotite coexists with the muscovite. Samples are from metamorphic terranes and from granitic and granodioritic bo
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::68df7d363d8d7cdfd78de29a72c7c214
https://doi.org/10.2138/am.2008.2523
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2
Thermodynamic modelling of the reaction muscovite+cordierite→Al2SiO5+biotite+quartz+ H2O: constraints from natural assemblages and implications for the metapelitic petrogenetic grid
Autor: C. L. Debuhr, David R. M. Pattison, John T. Cheney, C. V. Guidotti, Frank S. Spear
Publikováno v: Journal of Metamorphic Geology. 20:99-118
The reaction muscovite+cordieritebiotite+Al2SiO5 +quartz+H2O is of considerable importance in the low pressure metamorphism of pelitic rocks: (1) its operation is implied in the widespread assemblage Ms + Crd +And± Sil + Bt + Qtz, a common mineral a
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f1e342ffd5a8285f85ee866531bd5ede
https://doi.org/10.1046/j.0263-4929.2001.356.356.x
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3
Garnet-biotite geothermometry revised; new Margules parameters and a natural specimen data set from Maine
Autor: Biswajit Mukhopadhyay, Barbara L. Dutrow, M. D. Dyar, C. V. Guidotti, M. J. Holdaway
Publikováno v: American Mineralogist. 82:582-595
The garnet-biotite geothermometer has been recalibrated using recently obtained Margules parameters for iron-magnesium-calcium garnet, Mn interactions in garnet, and Al interactions in biotite, as well as the Fe oxidation state of both minerals. Fe-M
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e7027560f54865d10057a6f46f9b1a21
https://doi.org/10.2138/am-1997-5-618
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5
A new graphical presentation and subdivision of potassium micas
Autor: C. V. Guidotti, B. Gottesmann, G. Tischendorf, H. J. Forster, Milan Rieder
A system based on variation of the octahedrally coordinated cations is proposed for graphical presentation and subdivision of tri- and dioctahedral K micas, which makes use of elemental differences (in a.p.f.u.): (Mg – Li) [= mgli] and (Fetot + Mn
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f7f9989108dae5c0bfbb2ed5906289e8
https://publishup.uni-potsdam.de/frontdoor/index/index/docId/15386
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9
Compositional variation of muscovite as a function of metamorphic grade and assemblage in metapelites from N.W. Maine
Autor: C. V. Guidotti
Publikováno v: Contributions to Mineralogy and Petrology. 42:33-42
Chemical data are presented for 49 muscovites from high and low Al specimens collected form N.W. Maine at metamorphic grades ranging from the upper staurolite to the upper sillimanite zone. Data also are presented for two muscovite from St. Paul Isla
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::86cc0ef18740db741f82fa7c4cf3bd8e
https://doi.org/10.1007/bf00521645
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