Records of the Geological Survey of India, Volume 86, Parts 2-4Geological Survey of India, 1955 - Earthquakes |
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Page 391
... Thin sections of chlorite - actinolite - schists show tabular , pseudo- hexagonal crystals of pleochroic chlorite ( colourless to yellowish green ) forming the chief constituent . Minute shreds of sericite are associated with chlorite ...
... Thin sections of chlorite - actinolite - schists show tabular , pseudo- hexagonal crystals of pleochroic chlorite ( colourless to yellowish green ) forming the chief constituent . Minute shreds of sericite are associated with chlorite ...
Page 392
Thin sections of calc - silicate rocks , under the microscope , show pale green , pleochroic actinolite forming the chief constituent . It is arranged in an irregular fashion . Quartz grains are common . Small grains of yellowish ...
Thin sections of calc - silicate rocks , under the microscope , show pale green , pleochroic actinolite forming the chief constituent . It is arranged in an irregular fashion . Quartz grains are common . Small grains of yellowish ...
Page 444
... thin , irregular veins or lumps in hematite . Calcite sometimes replaces hematite , and in some cases thin stringers of hematite in calcite indicate partial replacement . It is deposited on chloro- phaeite , and is younger than the ...
... thin , irregular veins or lumps in hematite . Calcite sometimes replaces hematite , and in some cases thin stringers of hematite in calcite indicate partial replacement . It is deposited on chloro- phaeite , and is younger than the ...
Contents
OF | 310 |
MINERALS PRODUCED IN THE INDIAN UNION | 316 |
INTRODUCTION | 433 |
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actinolite Adirondack Ajmer-Merwara alumina Amjor anorthosite anorthositic rocks artesian Australia Barakars Basin beds Bihar Bijaigarh shale Bijawar biotite-schists BORE HOLE boulders calcite cent chemical chloritoid chromite coal streaks coalfield composition Conglomerate crystals Dalipnagar deposits depth district dolomite emerald exported faulting feet felspar fire clay flow formation Geol Geological Survey glaciation gneisses Gondwana gypsum ice cap ilmenite India iron Kaliguman kyanite lavas limestone Madhya Pradesh Madras magma magnetic mineral magnetite marl meteorite mica miles mines Mysore nala occurs outcrop output paleomagnetic pegmatites peridotite Permian plagioclase present production pyrite quantity quartz quartzites Rajasthan Rampur Rampur seam remanent magnetism reverse remanent magnetism samples sandstone schists sediments Series shale Shale with coal Shaly Shaly coal Shaly sandstone Singhbhum Sittampundi Complex Survey of India TABLE temperature thickness tillite tion titaniferous magnetite tons valued Triassic unconformity Upper Kaimur sandstone veins Vindhyan