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 20
... twins are secondary , i.e. , clase ; they appear to be inclusions . • Quartz grains are xenoblastic and show ... twins with ( 010 ) com- position face vastly outnumber those with other composi- tion faces . Tobi ( 1962 ) suggests that ...
... twins are secondary , i.e. , clase ; they appear to be inclusions . • Quartz grains are xenoblastic and show ... twins with ( 010 ) com- position face vastly outnumber those with other composi- tion faces . Tobi ( 1962 ) suggests that ...
Page 42
... twins should effect a systematic twinned relationship between the zone lamellae of the different components ( as in ( vi ) above ) . Vance pointed out that primary twins have irregular habits , are rather broad and coarse , terminate ...
... twins should effect a systematic twinned relationship between the zone lamellae of the different components ( as in ( vi ) above ) . Vance pointed out that primary twins have irregular habits , are rather broad and coarse , terminate ...
Page 42
... twins should effect a systematic twinned relationship between the zone lamellae of the different components ( as in ( vi ) above ) . Vance pointed out that primary twins have irregular habits , are rather broad and coarse , terminate ...
... twins should effect a systematic twinned relationship between the zone lamellae of the different components ( as in ( vi ) above ) . Vance pointed out that primary twins have irregular habits , are rather broad and coarse , terminate ...
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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