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Articles, 2 records found
Articles 2 records found  
1.
10 p, 1.7 MB Fuzzy phase diagrams of clay minerals / Varadachari, Chandrika (Raman Centre for Applied and Interdisciplinary Sciences)
This paper presents a novel concept in the thermodynamic derivation of phase diagrams for clay minerals that incorporates fuzzy transition zones. This new technique yields phase diagrams that have graded (fuzzy) zones of mineral occurrences and includes compositional variability within mineral groups. [...]
2006 - 10.1346/CCMN.2006.0540508
Clays and Clay Minerals, Vol. 54, Núm. 5 (2006) , p. 616-625  
Detailed record -
2.
15 p, 3.2 MB Phase equilibria and P-T-X (Fe-Mg) relations involving GT-St-Cd-Als-Bi-Mu-Qz-Kfs-H20 in medium-high grade metapelites (KFASH,KMASH and KFMASH systems) / Sebastián Castellanos, Alfredo (Universitat Autònoma de Barcelona. Departament de Geologia) ; Martínez Fernández, Francisco José
En rocas metapelíticas de diversas áreas en el Hercínico de la Península Ibérica se observan a menudo las siguientes reacciones: Estaurolita + moscovita + cuarzo = biotita + Al2SiO5+ H2O Granate + moscovita = Al2SiO5 + biotita ± cuarzo Biotita + Al2SiO5 + cuarzo = cordierita + feldespato potásico + H2O. [...]
In different areas of the Hercynian in the Iberian Peninsula sorne reactions are repeatedly observed in pelites, these reactions are: Staurolite + muscovite + quartz = Biotite+ Al2SiOs+ H20 Garnet + muscovite = AI2SiOs+ biotite+ quartz Biotite + Al2SiOs + quartz = Cordierite + K feldspar+Hp In order to examinate the P-T stability fields of tbese, and otber similar reactions, aH the univariant equilibria in multisystems with Gt-Cd-St-Bi-Mu-Als-Qz-HP, Gt-St-Bi-Mu-Fk-AIs-QzHp and Cd-St-Bi-Mu-Fk-AIs-Qz-H20 in Kp-FeO-AI20 r Si02-H20 (KFASH) system have been calculated, and their corresponding P-T grids have been constructed. [...]
1989 - 10.3989/egeol.89455-6498
Estudios geológicos, Vol. 45, Núm. 5-6 (1989) , p. 251-265  
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