Geological Bulletin, Volumes 17-18National Centre of Excellence in Geology, University of Peshawar, 1984 - Geology |
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Page 16
... phengite molecule in phengite molecule in muscovite of California than in those of new Caledonia may reflect lower T or higher Р20 . Liou et al . ( 1975 ) reported Fe , Mg , and Si - rich phengites in the blueschists and high - Na ...
... phengite molecule in phengite molecule in muscovite of California than in those of new Caledonia may reflect lower T or higher Р20 . Liou et al . ( 1975 ) reported Fe , Mg , and Si - rich phengites in the blueschists and high - Na ...
Page 17
... phengites . Na2 O 2 wt % OXIDE 0 6 Fe203 4- 2- 6 4- +8 Phengite Taiwan Shirataki Paragonite Muscovite A12 03 20 24 28 32 36 40 Fig . 4. Na2O - Al2O3 , and Fe : O , ( total ) - Al2O , plots showing compositional variations in the eastern ...
... phengites . Na2 O 2 wt % OXIDE 0 6 Fe203 4- 2- 6 4- +8 Phengite Taiwan Shirataki Paragonite Muscovite A12 03 20 24 28 32 36 40 Fig . 4. Na2O - Al2O3 , and Fe : O , ( total ) - Al2O , plots showing compositional variations in the eastern ...
Page 43
... phengite on the basis of abundance of Fe + 2 + Mg in the octahedral group . Phengite is a common mineral in high - P , Low - T metamorphic paragenesis ( Chopin and Maluski , 1980 ; Frey et al . , 1983 ) . Four selected analyses of white ...
... phengite on the basis of abundance of Fe + 2 + Mg in the octahedral group . Phengite is a common mineral in high - P , Low - T metamorphic paragenesis ( Chopin and Maluski , 1980 ; Frey et al . , 1983 ) . Four selected analyses of white ...
Contents
Distribution of trace elements in ophiolites from Cazaneshti | 17 |
Petrochemistry of the rocks from Babaji area a part of the Ambela granitic | 31 |
Petrology of the Bibai volcanics NE Baluchistan | 43 |
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Other editions - View all
Geological Bulletin, Volumes 33-34 University of Peshawar. Department of Geology No preview available - 2000 |
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Afghanistan Alpurai amphibole amphibolite analyses anorthosites associated Babaji basalts Batura belt Bibai biotite block blueschist Bull calcic chemical Chilas Chilas complex chlorite chromite chromitites clinopyroxene composition coronas coronites Cretaceous cumulates deposits dunite dykes epidote facies fault feldspar Formation gabbros garnet Geol Geology glacier glaucophane gneiss grains granulites greenschist high-P Himalaya hornblende Hunza igneous Indo-Pakistan Indus suture island arc Karakorum Kazmi Khan Kohistan Ladakh laterite lavas layers limestone mafic magmatic magnetite Malakand Manchar Manglaur margin melange metamorphic metasediments mica microprobe minerals Mingora Mohmand Agency Muslimbagh norites northern Pakistan obducted occur olivine ophiolites orthopyroxene oxide Pakistan pegmatites peridotite petrography plagioclase plate Punjab pyroxene pyroxenites quartz samples sandstone schist sediments sequence serpentine serpentinite Shah Shangla Siwalik Group spinel stratigraphy Surv suture zone Swat Table Tahirkheli tectonic tectonites thickness Thrust troctolites ultramafic rocks Univ University of Peshawar valley volcanic Zhob