Records of the Geological Survey of India, Volume 112, Part 7The 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 37
... felspar . Epidote is green and shows moderately bold relief and polarisation colours of second order . In a few cases ilmenite is seen , partially altering to leucoxene . Flakes of sericite , associated with kaolin is very common within ...
... felspar . Epidote is green and shows moderately bold relief and polarisation colours of second order . In a few cases ilmenite is seen , partially altering to leucoxene . Flakes of sericite , associated with kaolin is very common within ...
Page 38
... felspar , viz . , othoclase , microperthite , microcline , oligoclase and andesine ; quartz , biotite , chlorite , muscovite , sericite , iron oxide and zircon . Orthoclase is partially kaolinised and sericitised , so is the case with ...
... felspar , viz . , othoclase , microperthite , microcline , oligoclase and andesine ; quartz , biotite , chlorite , muscovite , sericite , iron oxide and zircon . Orthoclase is partially kaolinised and sericitised , so is the case with ...
Page 92
... felspar in various forms grading from fine cuneiform , lamellar to coarse irregular . Plagioclase ( albite - oligoclase ) occurs in small amounts . Other minerals include black opaques , Fig . 6. Photomicrograph showing the phenocryst ...
... felspar in various forms grading from fine cuneiform , lamellar to coarse irregular . Plagioclase ( albite - oligoclase ) occurs in small amounts . Other minerals include black opaques , Fig . 6. Photomicrograph showing the phenocryst ...
Contents
Coastal geomorphology of Bhavnagar Gujarat India O | 1 |
Sediments of river Mendhaan admixture of humid and arid epoch | 11 |
CONTENTS | 16 |
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Ajabgarh Group albite Alwar Group Aravalli Aund axial Banded Gneissic Complex Bari Sadri basin Bayana beds Berach Granite Bhadesar Bhavnagar biotite Buchara Bundelkhand Gneiss calcite chert chlorite colour conglomerate country rocks cross-bedding Delhi Delhi Supergroup deposits district dolomite east eastern emplacement epidote facies fault felsite felspar felspathic ferruginous folds foliation fractures Geol Geological Survey geosynclinal cycle Gneiss grade grains of quartz granite porphyry grey Gujarat hornblende intrusive Jahaj Jaipur Jogipura Formation Khardeola Khareri Khetri Kushalgarh Kutch limestone magmatic matrix metamorphism metasediments mica schist microcline migmatites mineralisation minerals muscovite NE-SW Nithar northeastern Rajasthan occur oligoclase oolites orthoclase pebbles pegmatite phase phenoclasts phyllites places Pre-Aravalli pre-Delhi quartz quartz felsite quartzite Raialo Rajasthan ripple marks Salenia sand sandstone schist sedimentary sedimentation seen sequence sericite shale shows siliceous Sita slates specimen stratigraphic Supergroup surface Surv Survey of India tectonic terrace thick trend unconformity veins Vindhyan western zone