Records of the Geological Survey of India, Volume 114, Parts 3-6Government of India, 1982 - Geology Includes the "Annual report of the Geological Survey of India," 1867- |
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Page 35
... grade schists . NNE - SSW joint system so prominently noticed in the area is tensile in origin and , ostensibly , it was the last to develop . Its imprint can be seen in all the rock types except basic dykes . On the basis of the ...
... grade schists . NNE - SSW joint system so prominently noticed in the area is tensile in origin and , ostensibly , it was the last to develop . Its imprint can be seen in all the rock types except basic dykes . On the basis of the ...
Page 80
... grade - Transparent and flawless gems . 2 ) Cabochon grade - slightly inferior quality including translucent to opaque types . 3 ) Tumbling grade - All colours with flaws or inclu- sions . 4 ) Carving grade - Mostly slabs , blocks and ...
... grade - Transparent and flawless gems . 2 ) Cabochon grade - slightly inferior quality including translucent to opaque types . 3 ) Tumbling grade - All colours with flaws or inclu- sions . 4 ) Carving grade - Mostly slabs , blocks and ...
Page 55
... grade bauxite , and in the laterite cover it increases to 60 to 120 ppm . In ferruginous bauxite and laterite , the ... Grade The reserves of these plateaux were arrived at by the area of influence method and the grade was decided based ...
... grade bauxite , and in the laterite cover it increases to 60 to 120 ppm . In ferruginous bauxite and laterite , the ... Grade The reserves of these plateaux were arrived at by the area of influence method and the grade was decided based ...
Contents
Impact of Coal mining of the natural landscape in Raniganj | 6 |
Ranganathan | 31 |
Geothermal fields of Ganjam and Puri Districts Orissa | |
Copyright | |
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Andhra Pradesh anorthosite Archaean assemblage associated bands basalt basin bauxite beds biotite carbonate charnockite chert chlorite clay seam coal coalfield cobalt colour conglomerate corundum crystals Deccan Trap deposits district east eastern Eocene evaporite facies flow folds foliation Formation garnet gems gemstones Geol Surv Ind Geological Survey gneiss Gondwana grade grained granite grey Group gypsum hills hornblende India indicate Itwa Sandstone Karnataka Kerala laterite limestone lineament lower Madhya Pradesh mafic magnetite manganese margin metamorphism mica belt mineralisation minerals mining occur ophiolite Orissa Panna Shale pegmatites phyllite plagioclase plain planation surfaces Plate quarries quartz quartzite Quaternary Ramanujam Raniganj ratio regional Rewa river rocks samples sand Sandstone schist schistose sedimentary sediments Shale shear shows Siang sillimanite Simrawal soil spoil dumps sq km structures Survey of India tectonic Tertiary thickness tion trend Upper upto valley Vindhyan Wardha zone