caa a22 4500 465791492 CHVBK 20180323112026.0 cr unu---uuuuu 170327e19900801xx s 000 0 eng 10.1007/BF00306544 doi (NATIONALLICENCE)springer-10.1007/BF00306544 A calculated petrogenetic grid for ultramafic rocks in the system CaO-FeO-MgO-Al2O3-SiO2-CO2-H2O at low pressures [Elektronische Daten] [Thomas Will, Roger Powell, Tim Holland] Calculated phase equilibria among the minerals amphibole, chlorite, clinopyroxene, orthopyroxene, olivine, dolomite, magnesite, serpentine, brucite, calcite, quartz and fluid are presented for the system CaO−FeO−MgO−Al2O3−SiO2−CO2−H2O (CaF-MASCH), with chlorite and H2O−CO2 fluid in excess and for a temperature range of 440°C-600°C and low pressures. The minerals chosen in CaFMASCH represent the great majority of phases encountered in metamorphosed ultramafic rocks. The changes in mineral compositions in terms of FeMg-1 and (Mg, Fe)SiAl-1Al-1 are related to variations in the intensive parameters. For example, equilibria at high $$X_{{\text{CO}}_{\text{2}} } $$ in the presence of chlorite involve minerals which are relatively aluminous compared with those at low $$X_{{\text{CO}}_{\text{2}} } $$ . The calculated invariant, univariant and divariant equilibria are compared with naturally-occurring greenschist and amphibolite facies ultramafic mineral assemblages. The correspondence of sequences of mineral assemblages and the compositions of the minerals in the assemblages is very good. Springer-Verlag, 1990 Will Thomas Department of Geology, University of Melbourne, 3052, Parkville, Victoria, Australia aut Powell Roger Department of Geology, University of Melbourne, 3052, Parkville, Victoria, Australia aut Holland Tim Department of Earth Sciences, University of Cambridge, Downing Street, CB2 3EQ, Cambridge, England, UK aut Contributions to Mineralogy and Petrology Springer-Verlag 105/3(1990-08-01), 347-358 0010-7999 105:3<347 1990 105 410 https://doi.org/10.1007/BF00306544 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00306544 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Will Thomas Department of Geology, University of Melbourne, 3052, Parkville, Victoria, Australia aut NATIONALLICENCE 700 1- Powell Roger Department of Geology, University of Melbourne, 3052, Parkville, Victoria, Australia aut NATIONALLICENCE 700 1- Holland Tim Department of Earth Sciences, University of Cambridge, Downing Street, CB2 3EQ, Cambridge, England, UK aut NATIONALLICENCE 773 0- Contributions to Mineralogy and Petrology Springer-Verlag 105/3(1990-08-01), 347-358 0010-7999 105:3<347 1990 105 410 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer