Records of the Geological Survey of India, Volume 56The Survey, 1926 - 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 48
... microcline and micro - pegmatite , probably of Archæan age , traversed by a network of numerous quartz reefs and intersecting altered dolerite ( epidiorite ) dykes , and covered in 48 [ VOL . LVI . Records of the Geological Survey of India ...
... microcline and micro - pegmatite , probably of Archæan age , traversed by a network of numerous quartz reefs and intersecting altered dolerite ( epidiorite ) dykes , and covered in 48 [ VOL . LVI . Records of the Geological Survey of India ...
Page 49
... microcline . Quartz reefs , which are well jointed and non- auriferous , traverse the granite - gneisses ; these are sometimes fault- ed , and are invariably older than the epidiorite dykes , for in every case the latter are seen to cut ...
... microcline . Quartz reefs , which are well jointed and non- auriferous , traverse the granite - gneisses ; these are sometimes fault- ed , and are invariably older than the epidiorite dykes , for in every case the latter are seen to cut ...
Page 184
... microcline ( pro- bably soda - microcline ) with some albite , and ( c ) is mainly amphibole with sphene and apatite . Biotite and garnet are also present in some modifications . There is thus visible in the field an almost complete ...
... microcline ( pro- bably soda - microcline ) with some albite , and ( c ) is mainly amphibole with sphene and apatite . Biotite and garnet are also present in some modifications . There is thus visible in the field an almost complete ...
Page 185
... microcline , albite and oligoclase also occur in subordinate amount . The plagioclases were identified by the method of Michel - Lévy -- of extinction angles measured from the trace of the albite lamellation . Perthitic inter- growths ...
... microcline , albite and oligoclase also occur in subordinate amount . The plagioclases were identified by the method of Michel - Lévy -- of extinction angles measured from the trace of the albite lamellation . Perthitic inter- growths ...
Page 187
... microcline and other felspars . These occur in force beyond the margin of the main syenite body , in the low scarp of quartzites to the south - east of it , and are in fact more numerous outside the syenite than within its limits ...
... microcline and other felspars . These occur in force beyond the margin of the main syenite body , in the low scarp of quartzites to the south - east of it , and are in fact more numerous outside the syenite than within its limits ...
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Common terms and phrases
20 per cent A. M. Heron apophyllite Aravalli Area in acres Assam bands beds Bihar Bihar and Orissa biotite Burma Calcutta cancrinite cassiterite Central India Central Provinces cept oil Clean product Ash Coal-fields coking Cretaceous Date of commence Decem deposits district elæolite Exogyra feet felspars field fossil froth flotation Geol Geological Survey gneisses granite Hills inch Indian coals island January Jharia Kashmir Kishengarh Lashio lignite limestone Madras Manganese Maung ment Mergui Messrs mica microcline miles Mineral oil minerals ex Mining Lease mud volcano Namma Nature of grant Novem occur okenite Orissa P. L. renewal Pakokku Pauk pegmatite Pegu Plate portion Price 1 rupee Punjab Quantity quartzites Rajputana rocks Rupee samples Seam Septem Seth shales Shan sodalite species specimens Surv Survey of India syenite Tavoy Tertiary Thongwa tons valued Upper valley Value Rupee 18 veins Weight Wolfram Yekkyin