Records of the Geological Survey of India, Volume 72The Survey, 1937 - 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 v
... sericite ; sphalerite ( grey ) . Section 73. X54 . FIG . 2. - Arsenopyrite crystals with all centres replaced by galena ; in sphalerite ( light grey ) and quartz ( dark grey ) . Section 73. X54 . FIG . 3. - Löllingite , which had ...
... sericite ; sphalerite ( grey ) . Section 73. X54 . FIG . 2. - Arsenopyrite crystals with all centres replaced by galena ; in sphalerite ( light grey ) and quartz ( dark grey ) . Section 73. X54 . FIG . 3. - Löllingite , which had ...
Page 351
... sericite , preserved that relationship . It is interest- ing to note that sericite is rarely replaced by later ore minerals , the latter prefer to replace quartz , etc. , pushing the sericite aside . Occasionally , however , it has been ...
... sericite , preserved that relationship . It is interest- ing to note that sericite is rarely replaced by later ore minerals , the latter prefer to replace quartz , etc. , pushing the sericite aside . Occasionally , however , it has been ...
Page 378
... sericite . The albite- oligoclase of the groundmass is clearer and more acid than that of the larger grains , which it seems to corrode , and even invades along narrow channels produced by fracture . The biotite is partially chloritised ...
... sericite . The albite- oligoclase of the groundmass is clearer and more acid than that of the larger grains , which it seems to corrode , and even invades along narrow channels produced by fracture . The biotite is partially chloritised ...
Contents
1727 | 1 |
The Snout of the Gangotri Glacier Tehri Garhwal By J B Auden | 7 |
PERMOCARBONIFEROUS LIMESTONE INLIERS IN THE SUBHIMA | 13 |
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A. L. Coulson Agglomeratic Slate Assam Attock bakelite band beds Burma Burzil calc-gneisses Calcutta cement cent Central Provinces chalcopyrite clay coal Cretaceous deposits district east Eocene epidiorite fault feet fossils galena Gangotri Gangotri glacier Garhwal Geol Geological Survey Geologist gersdorffite Ghundai Tarako glacier gneisses granite grey Hills Himalaya India intrusions Isa Khel Journ Kashmir Khyber Agency limestone lower seam marble Mergui series metamorphism Middlemiss miles minerals moraine north-west North-West Frontier Province Nummulitic objective sand occur Oreinus outcrops P. L. Renewal Panjal Petroleum Plate Plateau polishing production Punjab pyrite quartz quartzites range Rhacopteris river rocks Sahni sandstones schistose Schizothorax sections shales Shali Shan sheet Siju Sivapithecus Siwaliks snout South Waziristan south-west species specimens sphalerite strata Surv Survey of India syncline Tarako Tertiary tetrahedrite thick tons valued Tura Upper valley volcanic Wadia