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. |
From inside the book
Results 1-3 of 10
Page 56
... blue colour . Relief is very high and the refractive index is greater than balsam . Rhom- bohedral partings , one along the length of the crystal also is noticed . Polysynthetic or lamellar twinning is found at an angle of 10 ° to 15 ...
... blue colour . Relief is very high and the refractive index is greater than balsam . Rhom- bohedral partings , one along the length of the crystal also is noticed . Polysynthetic or lamellar twinning is found at an angle of 10 ° to 15 ...
Page 86
... blue or greenish blue Fine yellow , brown or reddish brown Colourless at 250 ° C 4 . Aquamarine Green 5 . Tourmaline 6 . Ruby 7 . Kunzite Dark green Mixed red and blue colours Bluish or lilac pink Emerald Green Sky - blue at 300 ° -400 ...
... blue or greenish blue Fine yellow , brown or reddish brown Colourless at 250 ° C 4 . Aquamarine Green 5 . Tourmaline 6 . Ruby 7 . Kunzite Dark green Mixed red and blue colours Bluish or lilac pink Emerald Green Sky - blue at 300 ° -400 ...
Page 88
... blue , purplish red 12-60 5-50 Opal Dendritic ( without fire ) mass type . 2-5 1-5 Tiger's - eye Yellow brown 1-2 5-10 Garnet ( I Grade ) Medium dark red and orange red ( flawless fine ) $ Garnet ( II Grade ) Same , with light ...
... blue , purplish red 12-60 5-50 Opal Dendritic ( without fire ) mass type . 2-5 1-5 Tiger's - eye Yellow brown 1-2 5-10 Garnet ( I Grade ) Medium dark red and orange red ( flawless fine ) $ Garnet ( II Grade ) Same , with light ...
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 |
Copyright | |
5 other sections not shown
Other editions - View all
Common terms and phrases
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