Records of the Geological Survey of India, Volume 75, Issues 2-16Government of India, 1940 - Earthquakes Includes the "Annual report of the Geological Survey of India," 1867- |
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Page 17
... hornblende , often with segregations of iron - ore . This secondary hornblende sometimes . entirely replaces the pyroxenes and both it and the hypersthene , which is also secondary after diopside , assume a larger size than the original ...
... hornblende , often with segregations of iron - ore . This secondary hornblende sometimes . entirely replaces the pyroxenes and both it and the hypersthene , which is also secondary after diopside , assume a larger size than the original ...
Page 26
... hornblende associated with a very small amount of pale brown biotite along the margins . Plagioclase is mostly decomposed into zoisite and there are a few crystals of scapolite and apatite in asso- ciation with the felspar . Iron ore ...
... hornblende associated with a very small amount of pale brown biotite along the margins . Plagioclase is mostly decomposed into zoisite and there are a few crystals of scapolite and apatite in asso- ciation with the felspar . Iron ore ...
Page 35
... hornblende . Small crystals of biotite , derived from the secondary hornblende , also add their quota to the development of larger biotite . Small remnants of bluish hornblende are seen to be embedded in biotite in such cases ...
... hornblende . Small crystals of biotite , derived from the secondary hornblende , also add their quota to the development of larger biotite . Small remnants of bluish hornblende are seen to be embedded in biotite in such cases ...
Contents
RECORDS | 2 |
MINERAL PRODUCTION FROM FRONTIER PROVINCE | 10 |
THE GEOLOGICAL SURVEY OF INDIA | 12 |
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Common terms and phrases
A. L. Coulson acid amphibole Assam band Barakar Bawdwin beds biotite Burma Calcutta Cambrian cent charnockites Cherra sandstone Cherrapunji Chitral clay coking coals Colliery Cretaceous crust deposits diopside diopside-gneisses Dishergarh Dore river Dutta Roy earthquake Eocene extract feet felspar ferruginous fossils garnet Geol Geological Survey Ghundai Tarako Gondwana granite grey Hazara district hills Himalaya hornblende hypersthene Indian coals Indobrahm Indus iron J. A. Dunn Jharia Khyber Agency Kohat district Kustore limestone limonite lower LXXV M. S. Krishnan manganese manganese-ore marble Mardan district material metamorphic meteorite miles minerals North-West Frontier Province Nummulitic occur P. K. Ghosh Panchet Permian Peshawar plagioclase Plate plateau Poniati PROFESSIONAL PAPER psilomelane Punjab quartz Raniganj rocks Salt Range samples sandstone seam selvage shales silicates Siwalik Siwalik River South Waziristan species specimens stage Surv Survey of India thickness tion troilite types Upper valley veins zone