Search results for "Anthophyllite"

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Quantitative phase petrology of cordierite-orthoamphibole gneisses and related rocks

2008

Cordierite-orthoamphibole gneisses and rocks of similar composition commonly contain low-variance mineral assemblages that can provide useful information about the metamorphic evolution of a terrane. New calculated petrogenetic grids and pseudosections are presented in the FeO-MgO-Al2O3-SiO2-H2O (FMASH), Na2O-CaO-K2O-FeO-MgO-Al2 O3- SiO2-H2O (NCKFMASH) and Na2O-CaO-K2O-FeO-MgO-Al2O3- SiO2-H2O-TiO2-Fe2 O3 (NCKFMASHTO) chemical systems to investigate quantitatively the phase relations in these rocks. Although the bulk compositions of cordierite-orthoamphibole gneisses are close to FMASH, calculations in this system do not adequately account for the observed range of mineral assemblages. Calcu…

MineralMetamorphic rockGeochemistryGeologyCordieriteengineering.materialGedriteGeochemistry and PetrologyAnthophylliteWhiteschistengineeringPetrologyGeologyTerraneGneissJournal of Metamorphic Geology
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