Records of the Geological Survey of India, Volume 114, Part 3The Survey, 1989 - 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 54
... plagioclase and biotite and subordinate amounts of muscovite , apatite and zircon . Plagioclase occurs as subhedral plates with rims of albite . Myrmekitic inter- growth between quartz and plagioclase has been observed . ( b ) Non ...
... plagioclase and biotite and subordinate amounts of muscovite , apatite and zircon . Plagioclase occurs as subhedral plates with rims of albite . Myrmekitic inter- growth between quartz and plagioclase has been observed . ( b ) Non ...
Page 56
... plagioclase and quartz present as accessory minerals . Opaque iron ore and a few grains of garnet are not uncommon . Amphibolites , as seen in the field , seems to be ortho- rather than the para - type . ( b . Hornblende gneiss These ...
... plagioclase and quartz present as accessory minerals . Opaque iron ore and a few grains of garnet are not uncommon . Amphibolites , as seen in the field , seems to be ortho- rather than the para - type . ( b . Hornblende gneiss These ...
Page 59
... Plagioclase ( P ) -Alkali feldspar ( A ) agram of the two varieties of granite ( Fig 13 ) including samples of Dhab area ( Central part of mica belt ) and Neropahar granite to the east of Kodarma show that the two varieties of granite ...
... Plagioclase ( P ) -Alkali feldspar ( A ) agram of the two varieties of granite ( Fig 13 ) including samples of Dhab area ( Central part of mica belt ) and Neropahar granite to the east of Kodarma show that the two varieties of granite ...
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abandoned quarries alluvium Archaean average axis Balasore Barakar Baripada beds BASU Basudebpur Bihar Bihar Mica Belt biotite block calcareous sandy clay charnockite Chotanagpur clay seam cultural mound deposit derelict lands developed excavation folds foliation foundation fractures Ganjam Geol GEOLOGICAL SURVEY geothermal fields gneiss gneissic Gondwana grained granite granite bodies granitic plutons grout hot spring INDIA Records Volume indicate intrusive Khondalite Kolab Koraput district laterites mapping materials metamorphites metre mica schist migmatite mineral nala natural landscape Nilgiri non-porphyritic granite open cast mining Orissa pediplains pegmatites plagioclase porphyritic porphyritic granite ppm ppm ppm present Puri district quarry depressions quartz quartzite Quaternary formations Rammam Raniganj Raniganj coalfield reclamation Records Volume 114 river samples schist Sector seepages shear zones Shri soil SPECTRAL REFLECTANCE sq km structures subsided lands surface Surv SURVEY OF INDIA Taptapani Tarabalue thermal water tion tunnel underground mines Upper Kolab varieties of granite West Bengal