Records of the Geological Survey of India, Volume 114, Part 5The Survey, 1982 - 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 34
Geological Survey of India. porphyroblast . Partly developed kyanite crystals , bluish green in colour , attain a maximum size of 3 cm . Garnet is semi - transparent and it is purple in colour . Its size varies from fraction of a ...
Geological Survey of India. porphyroblast . Partly developed kyanite crystals , bluish green in colour , attain a maximum size of 3 cm . Garnet is semi - transparent and it is purple in colour . Its size varies from fraction of a ...
Page 56
... colour and occurs in fibrous crystal aggregates in hand specimen and shows pale brown colour ana- logous to clouding in feldspars under the microscope . This might be attributed to the microscopic inclusions of ephesite as a result of ...
... colour and occurs in fibrous crystal aggregates in hand specimen and shows pale brown colour ana- logous to clouding in feldspars under the microscope . This might be attributed to the microscopic inclusions of ephesite as a result of ...
Page 86
... colour is stable for light , heat or radiation . But in a few cases their colours are not so stable to heat or radiations due to the very low content of colouring agents . In some of the varieties of quartz , topaz , and zircon the colour ...
... colour is stable for light , heat or radiation . But in a few cases their colours are not so stable to heat or radiations due to the very low content of colouring agents . In some of the varieties of quartz , topaz , and zircon the colour ...
Contents
A genetic model for the Sandur manganese ores RN Mishra | 10 |
A note on the intertrappean stratigraphy of Gandhari Kamareddi and Ramayampet areas Nizamabad 19 | 19 |
On the high grade schistose rocks equivalent to the Sargur schist complex in Kasaragod taluk | 31 |
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alteration Andhra Pradesh anorthosite anorthositic rocks apatite Archaean ascomata Attapadi Barakar Formation bauxite bauxite deposits belt biotite borehole Cannanore Cannanore district charnockite Chlorite chrysoberyl clay coal seams coal-sand ratio colour contours corundum Cuddapah Basin diopside emerald Ephesite facies feldspar fibrous quartz foliation fossil gabbro garnet garnetiferous sillimanite gneiss gem tracts gemstones Geol Surv Ind Geological Survey gneiss grains granite granulite green high grade hornblende idiomorphic magnetite crystals Intertrappean bed iolite iron isopach Jour Geol Kabbani Karnataka Kerala Krishna kyanite laterite lignite lineament lithofacies lithological magnetite manganese Margarite massif metamorphism migmatite minerals moonstone Mysore Nair number of coal occur ostiole pegmatite Perinthatta plagioclase planation surfaces pollen pyroxene quartz quartzite Ramanujam ratio map regional ruby samples sand Sandur sapphire Schist sedimentary sediments sillimanite South southern strand plain stratiform stratigraphic Survey of India taluk Tamil Nadu tectonic Tertiary thickness trend upto Warkalli Wynad zircon