Records of the Geological Survey of India, Volume 117, Part 2The Survey, 1986 - Earthquakes Vols. 1- include Report of the Geological Survey, 1867- ; v. 32- include Review of the mineral production of India, 1898/1903- ; v. 75 consists of Professional papers, no. 1-16; v. 76 consists of Bulletins of economic minerals. |
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Page 44
... albite inherits the albite twin direction of is well grilled , but not significantly perthitic . Biotite the microcline host ( Fig . 50 ) . Origin of the Perthite It is well known that perthites may originate in a variety of ways ...
... albite inherits the albite twin direction of is well grilled , but not significantly perthitic . Biotite the microcline host ( Fig . 50 ) . Origin of the Perthite It is well known that perthites may originate in a variety of ways ...
Page 34
... albite . It was strongly suggested that the combined effect of neuclei promotion by K - feldspar and plagioclase was operative in localising the albite . The appearance of the albite as a discrete element in the mineralogy indicates ...
... albite . It was strongly suggested that the combined effect of neuclei promotion by K - feldspar and plagioclase was operative in localising the albite . The appearance of the albite as a discrete element in the mineralogy indicates ...
Page 48
... albite . The appearance of the albite as a discrete element in the mineralogy indicates that crystallization occurred below the albite - K - feldspar miscibility solvus . Schermerhorn ( 1961 ) suggests that rim albites represent an ...
... albite . The appearance of the albite as a discrete element in the mineralogy indicates that crystallization occurred below the albite - K - feldspar miscibility solvus . Schermerhorn ( 1961 ) suggests that rim albites represent an ...
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Common terms and phrases
albite amphibolite amphibolite facies aureole Babina banded iron-formation Basu Batholith Berwar Bijawar biotite bodies Bundelkhand Bundelkhand granitic massif Bundelkhand massif chlorite composition conglomerate country rocks crystals developed dips dolerite dykes emplacement enclaves esmeraldite exhibit feature feldspar folds foliation formation garnet Geol GEOLOGICAL SURVEY gneisses Gneissic Complex grade grained granite granite granitic rocks granitoid groundmass H₂O hornblende inclusions INDIA Records indicate intrusive Jhansi granite Jhararghat K-feldspar Kabrai Karesra Karitoran lamellae leucogranite magmatic magnetite Mahroni mapped Mau Ranipur megacrysts metabasic metamorphism microcline migmatites minerals muscovite Mylliem Mylliem Pluton myrmekite occur outcrops parallel pegmatite perthite phenocrysts plagioclase pluton porphyritic porphyritic coarse grained porphyritic granites Precambrian pyrophyllite quartz quartz reefs quartz-sericite rock quartzites recrystallization relict samples schist schistose sedimentary sediments sericite shear Shillong Group Shillong rocks Shillong Series South Khasi Batholith sphene strike structural suggest SURVEY OF INDIA syenitic textural trending twins upto veins xenoliths zone